IEC 61837-2:2018

Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures

IEC 61837-2:2018 deals with standard outlines and terminal lead connections as they apply to surface-mounted devices (SMD) for frequency control and selection in ceramic enclosures, and is based on IEC 61240:2016.
This edition includes the following significant technical changes with respect to the previous edition:
a. revision of the figures to match the notation of the drawings of IEC 61240:2016;
b. addition of 7 enclosures as follows: DCC-6/5032A, DCC-6/3225A, DCC-4/3215C, DCC-6/2016A, DCC-2/2012C, DCC-2/1610C, DCC-4/1210C.
As a result, this third edition contains a total of 45 enclosure types, which are listed in Table 1.

Dispositifs piézoélectriques à montage en surface pour la commande et le choix de la fréquence - Encombrements normalisés et connexions des sorties - Partie 2: Enveloppes en céramique

L’IEC 61837-2:2018 traite des encombrements normalisés et des connexions des sorties des dispositifs à montage en surface pour la commande et le choix de la fréquence applicables aux enveloppes en céramique, et est basée sur l’IEC 61240:2016.
La présente édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a. révision des figures pour correspondre à la notation des dessins de l'IEC 61240:2016;
b. ajout des 7 enveloppes suivantes: DCC-6/5032A, DCC-6/3225A, DCC-4/3215C, DCC-6/2016A, DCC-2/2012C, DCC-2/1610C, DCC-4/1210C.

General Information

• Status: Published
• Publication Date: 23-Sep-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.140 - Piezoelectric devices
• Technical Committee: TC 49 - Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection
• Drafting Committee: WG 9 - TC 49/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 08-May-2018
• Completion Date: 28-May-2018

Relations

• Amended By: IEC 61837-2:2018/AMD1:2020 - Amendment 1 - Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures
• Effective Date: 05-Sep-2023
• Revises: IEC 61837-2:2011 - Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures
• Effective Date: 05-Sep-2023
• Revises: IEC 61837-2:2011/AMD1:2014 - Amendment 1 - Surface mounted piezoelectric devices for frequency control and selection - Standard outlines and terminal lead connections - Part 2: Ceramic enclosures
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61837-2 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
Surface mounted piezoelectric devices for frequency control and selection –
Standard outlines and terminal lead connections –
Part 2: Ceramic enclosures
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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Switzerland
About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 61837-2 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
Surface mounted piezoelectric devices for frequency control and selection –

Standard outlines and terminal lead connections –

Part 2: Ceramic enclosures
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.140 ISBN 978-2-8322-5673-2

– 2 – IEC 61837-2:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Configuration of enclosures . 6
5 Designation of types . 6
6 Ceramic enclosure dimensions . 7
7 Lead connections . 7
8 Designation of ceramic enclosures . 7
Sheet 1 . 9
Sheet 2 . 11
Sheet 3 . 13
Sheet 4 . 15
Sheet 5 . 17
Sheet 6 . 19
Sheet 7 . 21
Sheet 8 . 23
Sheet 9 . 25
Sheet 10 . 27
Sheet 11 . 29
Sheet 12 . 31
Sheet 13 . 33
Sheet 14 . 35
Sheet 15 . 37
Sheet 16 . 39
Sheet 17 . 41
Sheet 18 . 43
Sheet 19 . 45
Sheet 20 . 47
Sheet 21 . 49
Sheet 22 . 51
Sheet 23 . 53
Sheet 24 . 55
Sheet 25 . 57
Sheet 26 . 59
Sheet 27 . 61
Sheet 28 . 63
Sheet 29 . 65
Sheet 30 . 67
Sheet 31 . 69
Sheet 32 . 71
Sheet 33 . 73

Sheet 34 . 75
Sheet 35 . 77
Sheet 36 . 79
Sheet 37 . 81
Sheet 38 . 83
Sheet 39 . 85
Sheet 40 . 87
Sheet 41 . 89
Sheet 42 . 91
Sheet 43 . 93
Sheet 44 . 95
Sheet 45 . 97
Bibliography . 99

Table 1 – Designation of ceramic enclosures . 8

– 4 – IEC 61837-2:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61837-2 has been prepared by IEC technical committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control,
selection and detection.
This third edition cancels and replaces the second edition published in 2011 and
Amendment 1:2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of the figures to match the notation of the drawings of IEC 61240:2016;
b) addition of 7 enclosures as follows: DCC-6/5032A, DCC-6/3225A, DCC-4/3215C,
DCC-6/2016A, DCC-2/2012C, DCC-2/1610C, DCC-4/1210C.
As a result, this third edition contains a total of 45 enclosure types, which are listed in Table 1.

This International Standard is to be read in conjunction with IEC 61240:2016.
The text of this International Standard is based on the following documents:
CDV Report on voting
49/1252/CDV 49/1276/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61837 series, published under the general title Surface mounted
piezoelectric devices for frequency control and selection – Standard outlines and terminal lead
connections , can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

– 6 – IEC 61837-2:2018 © IEC 2018
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
1 Scope
This part of IEC 61837 deals with standard outlines and terminal lead connections as they apply
to surface-mounted devices (SMD) for frequency control and selection in ceramic enclosures,
and is based on IEC 61240:2016.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61240:2016, Piezoelectric devices – Preparation of outline drawings of surface-mounted
devices (SMD) for frequency control and selection – General rules
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Configuration of enclosures
The enclosures of the surface-mounted devices are made of ceramic materials with the
terminals of deposited metal film (leadless type) based on a descriptive designation system for
semiconductors – devices packages.
The configuration symbols are shown as follows:
• DCC (dual chip carrier);
• QCC (quad chip carrier).
5 Designation of types
The designation of types is shown on four parts as follows:

B C D D’
A E
IEC
A: Configuration symbol of enclosures:
– DCC (dual chip carrier);
– QCC (quad chip carrier).
B: Structure of terminal leads: leadless type has no mark.
C: Number of terminal leads
D: Serial number of both figures
E: Arrangement of terminal land:
In the case of DCC types:
– A (arrangement in the width direction side or the width direction side and the corner);
– B (arrangement in the length direction side or the length direction side and the corner);
– C (arrangement in the corner only).
In the case of QCC types:
– A (arrangement in the side only);
– B (arrangement in the side and the corner).
6 Ceramic enclosure dimensions
The dimensions given in this document apply to all completed SMD-devices for frequency
control and selection. Only those dimensions which meet the requirements of IEC 61240 are
given.
7 Lead connections
Recommendations for the lead connections of all completed SMD-devices for frequency control
and selection are given in the following individual sheets. Lead connections shall always be
given in the detail specification.
8 Designation of ceramic enclosures
Table 1 is a list which includes all new enclosure types with their sheet numbers and brief
descriptions. Old enclosure names are also listed as references.

– 8 – IEC 61837-2:2018 © IEC 2018
Table 1 – Designation of ceramic enclosures
No. Type Old type Sheet No. Description
1 QCC-18/1809A QCC-18/01 Sheet 1 Ceramic, welded, eighteen leadless SMD outline
2 QCC-12/1407A Sheet 2 Ceramic, welded, twelve leadless SMD outline
3 DCC-4/1206A DCC-4/01 Sheet 3 Ceramic, four leadless SMD outline
4 DCC-2/1206A Sheet 4 Ceramic, two leadless SMD outline
5 QCC-10/9272A Sheet 5 Ceramic, welded, ten leadless SMD outline
6 DCC-4/9070A Sheet 6 Ceramic, welded, four leadless SMD outline
7 DCC-4/8045B DCC-04/02, 03 Sheet 7 Ceramic, welded, four leadless SMD outline
8 DCC-2/8045B Sheet 8 Ceramic, welded, two leadless SMD outline
9 DCC-6/7834B Sheet 9 Ceramic, welded, six leadless SMD outline
10 DCC-6/7050A Sheet 10 Ceramic, welded, six leadless SMD outline
11 DCC-4/7050A DCC-4/08 Sheet 11 Ceramic, welded, four leadless SMD outline
12 DCC-4/7050B DCC-4/04, 05 Sheet 12 Ceramic, welded, four leadless SMD outline
13 QCC-10/7050A Sheet 13 Ceramic, welded, ten leadless SMD outline
14 QCC-6/7050A QCC-6/01, 02 Sheet 14 Ceramic, welded, six leadless SMD outline
15 DCC-6/6035A DCC-4/06, 07 Sheet 15 Ceramic, welded, six leadless SMD outline
16 DCC-4/6035C Sheet 16 Ceramic, welded, four leadless SMD outline
17 DCC-2/6035C Sheet 17 Ceramic, welded, two leadless SMD outline
18 QCC-8/5050A QCC-8/02 Sheet 18 Ceramic, welded, eight leadless SMD outline
19 QCC-12/5045A QCC-12/02 Sheet 19 Ceramic, welded, twelve leadless SMD outline
20 QCC-8/5045A Sheet 20 Ceramic, welded, eight leadless SMD outline
21 DCC-6/5032A Sheet 21 Ceramic, welded, six leadless SMD outline
22 DCC-4/5032A Sheet 22 Ceramic, welded, four leadless SMD outline
23 DCC-4/5032C Sheet 23 Ceramic, welded, four leadless SMD outline
24 DCC-2/5032B DCC-2/01 Sheet 24 Ceramic, welded, two leadless SMD outline
25 DCC-2/4818C Sheet 25 Ceramic, welded, two leadless SMD outline
26 DCC-2/4115C Sheet 26 Ceramic, welded, two leadless SMD outline
27 DCC-4/4025C DCC-6/01 Sheet 27 Ceramic, welded, four leadless SMD outline
28 QCC-8/3838A Sheet 28 Ceramic, welded, eight leadless SMD outline
29 DCC-6/3838A Sheet 29 Ceramic, welded, six leadless SMD outline
30 DCC-6/3225A Sheet 30 Ceramic, welded, six leadless SMD outline
31 DCC-4/3225C Sheet 31 Ceramic, welded, four leadless SMD outline
32 DCC-4/3215C Sheet 32 Ceramic, welded, four leadless SMD outline
33 DCC-2/3215C Sheet 33 Ceramic, welded, two leadless SMD outline
34 QCC-8/3030B Sheet 34 Ceramic, welded, eight leadless SMD outline
35 DCC-6/3030A Sheet 35 Ceramic, welded, six leadless SMD outline
36 DCC-6/2520A Sheet 36 Ceramic, welded, six leadless SMD outline
37 DCC-4/2520C/01,02,03 Sheet 37 Ceramic, welded, four leadless SMD outline
38 DCC-4/2020C Sheet 38 Ceramic, welded, six leadless SMD outline
39 DCC-6/2016A Sheet 39 Ceramic, welded, four leadless SMD outline
40 DCC-4/2016C/01,02,03 Sheet 40 Ceramic, welded, four leadless SMD outline
41 DCC-2/2012C Sheet 41 Ceramic, welded, two leadless SMD outline
42 DCC-4/1612C/01,02 Sheet 42 Ceramic, welded, four leadless SMD outline
43 DCC-2/1612C Sheet 43 Ceramic, welded, two leadless SMD outline
44 DCC-2/1610C Sheet 44 Ceramic, welded, two leadless SMD outline
45 DCC-4/1210C Sheet 45 Ceramic, welded, four leadless SMD outline

Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (18,0) 18,30
B – (9,0) 9,30
G – – 2,00
K 0,50 – 1,10
L
Actual size 1,20 – 1,80 Note
B
IEC e – 2,54 –
y – – 0,10
A
15 13 12 11 10
16 9
2 3 4 5 6
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,10 mm for lead 1 to identity the orientation.
B
Ceramic, welded, eighteen leadless SMD outline – Scale
Type QCC-18/1809A 3: 1
Sheet 1
B
G
L
B
– 10 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-18/1809A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Ground
2  Option
3  Option
4  Option
5  Option
6  Ground
7  Input/Output
8  Ground
9  Input/Output /Ground
10  Ground
11  Option
12  Option
13  Option
14  Option
15  Ground
16  Output/Input
17  Ground
18  Output/Input /Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (14,0) 14,30
B – (6,5) 6,80
G – – 2,00
Actual size K 0,50 – 1,10
IEC
L 1,70 – 2,30
B
e – 2,54 –
y – – 0,10
A
10 9 8
11 6
12 5
2 3 4
s
y s
e
K
IEC
Ceramic, welded, twelve leadless SMD outline – Scale
Type QCC-12/1407A 3: 1
Sheet 2
B
G
L
B
– 12 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-12/1407A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Option
2  Option
3  Ground
4  Option
5  Output/Input
6  Output/Input /Ground
7  Option
8  Ground
9  Option
10  Option
11  Input/Output
12  Input/Output /Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,30
Actual size
K 1,80 – 2,20
IEC
L 1,30 – 1,90
B
e – 5,08 –
e – 3,90 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/1206A 3: 1
Sheet 3
G
B
e
L
B
– 14 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 NC Ground
3 Terminal 2 Output
4 NC DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,70
K 1,60 – 2,20
Actual size
L 5,20 – 5,80
B
IEC
e – 5,08 –
y – – 0,10
A
1 2
s
y s
e
K
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/1206A 3: 1
Sheet 4
G
B
L
B
– 16 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-2/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,2) 9,50
B – (7,2) 7,50
G – – 2,00
Actual size K 0,60 – 1,20
IEC
L 0,80 – 1,40 Note
B
e – 2,54 –
y – – 0,10
A
8 7 6
10 4
2 3
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,00 mm for lead 1 to identify the orientation.
B
Ceramic, welded, ten leadless SMD outline – Scale
Type QCC-10/9272A 5: 1
Sheet 5
B
G
L
B
– 18 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-10/9272A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Input/Output /Ground
2  Input/Output
3  Ground
4  Ground
5  Ground
6  Output/Input /Ground
7  Output/Input
8  Option
9  Ground
10  Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,0) 9,30
B – (7,0) 7,30
G – – 2,00
Actual size K 1,10 – 1,70
IEC
L 0,90 – 1,50
B
e – 5,08 –
e – 5,80 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/9070A 5: 1
Sheet 6
e
1 G
B
L
B
– 20 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/9070A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (8,0) 8,30
B – (4,5) 4,80
G – – 2,00
Actual size
K 0,70 – 1,30
IEC
L 0,80 – 1,40
B
e – 2,54 –
e – 6,90 –
y – – 0,10
A
s
y s
e
L
B
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/8045B 5: 1
Sheet 7
e
G
B
K
– 22 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 Option Ground
3 Terminal 2 Output
4 Option DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max
A – (8,0) 8,30
B – (4,5) 4,80
G – – 1,60
Actual size
K 1,60 – 2,20
IEC
L 0,70 – 1,30
B
e – 7,00 –
y – – 0,10
A
1 2
s
y s
e
L
B
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/8045B 5: 1
Sheet 8
B
G
K
– 24 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-2/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,8) 8,10
B – (3,4) 3,70
G – – 1,20
Actual size
K 0,70 – 1,30
IEC
K 0,80 – 1,40
L 0,30 – 0,90
B1
L 1,10 – 1,70
B2
e – 6,70 –
e – 1,40 –
y – – 0,10
A
s
y s
e
K
L
B2
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7834B 5: 1
Sheet 9
B
e
G
K
L
B
...

IEC 61837-2 ®
Edition 3.1 2020-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Surface mounted piezoelectric devices for frequency control and selection –
Standard outlines and terminal lead connections –
Part 2: Ceramic enclosures
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

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IEC 61837-2 ®
Edition 3.1 2020-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Surface mounted piezoelectric devices for frequency control and selection –

Standard outlines and terminal lead connections –

Part 2: Ceramic enclosures
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.140 ISBN 978-2-8322-8915-0

IEC 61837-2 ®
Edition 3.1 2020-09
CONSOLIDATED VERSION
REDLINE VERSION
colour
inside
Surface mounted piezoelectric devices for frequency control and selection –
Standard outlines and terminal lead connections –
Part 2: Ceramic enclosures
– 2 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Configuration of enclosures . 6
5 Designation of types . 6
6 Ceramic enclosure dimensions . 7
7 Lead connections . 7
8 Designation of ceramic enclosures . 7
Sheet 1 . 10
Sheet 2 . 12
Sheet 3 . 14
Sheet 4 . 16
Sheet 5 . 18
Sheet 6 . 20
Sheet 7 . 22
Sheet 8 . 24
Sheet 9 . 26
Sheet 10 . 30
Sheet 11 . 34
Sheet 12 . 36
Sheet 13 . 38
Sheet 14 . 40
Sheet 15 . 42
Sheet 16 . 44
Sheet 17 . 46
Sheet 18 . 48
Sheet 19 . 50
Sheet 20 . 52
Sheet 21 . 56
Sheet 22 . 60
Sheet 23 . 62
Sheet 24 . 64
Sheet 25 . 66
Sheet 26 . 68
Sheet 27 . 70
Sheet 28 . 72
Sheet 29 . 74
Sheet 30 . 78
Sheet 31 . 82
Sheet 32 . 84

© IEC 2020
Sheet 33 . 86
Sheet 34 . 88
Sheet 35 . 90
Sheet 36 . 92
Sheet 37 . 94
Sheet 38 . 96
Sheet 39 . 98
Sheet 40 . 102
Sheet 41 . 104
Sheet 42 . 108
Sheet 43 . 110
Sheet 44 . 112
Sheet 45 . 114
Sheet 46 . 116
Sheet 47 . 118
Bibliography . 120

Table 1 – Designation of ceramic enclosures . 8

– 4 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61837-2 edition 3.1 contains the third edition (2018-05) [documents 49/1252/CDV and
49/1276/RVC] and its amendment 1 (2020-09) [documents 49/1338/CDV and 49/1347/RVC].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red
text. A separate Final version with all changes accepted is available in this publication.

© IEC 2020
International Standard IEC 61837-2 has been prepared by IEC technical committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control,
selection and detection.
This third edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of the figures to match the notation of the drawings of IEC 61240:2016;
b) addition of 7 enclosures as follows: DCC-6/5032A, DCC-6/3225A, DCC-4/3215C,
DCC-6/2016A, DCC-2/2012C, DCC-2/1610C, DCC-4/1210C.
As a result, this third edition contains a total of 45 enclosure types, which are listed in Table 1.
This International Standard is to be read in conjunction with IEC 61240:2016.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61837 series, published under the general title Surface mounted
piezoelectric devices for frequency control and selection – Standard outlines and terminal lead
connections , can be found on the IEC website.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

– 6 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
1 Scope
This part of IEC 61837 deals with standard outlines and terminal lead connections as they apply
to surface-mounted devices (SMD) for frequency control and selection in ceramic enclosures,
and is based on IEC 61240:2016.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61240:2016, Piezoelectric devices – Preparation of outline drawings of surface-mounted
devices (SMD) for frequency control and selection – General rules
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Configuration of enclosures
The enclosures of the surface-mounted devices are made of ceramic materials with the
terminals of deposited metal film (leadless type) based on a descriptive designation system for
semiconductors – devices packages.
The configuration symbols are shown as follows:
• DCC (dual chip carrier);
• QCC (quad chip carrier).
5 Designation of types
The designation of types is shown on four parts as follows:

© IEC 2020
B C D D’
A E
IEC
A: Configuration symbol of enclosures:
– DCC (dual chip carrier);
– QCC (quad chip carrier).
B: Structure of terminal leads: leadless type has no mark.
C: Number of terminal leads
D: Serial number of both figures
E: Arrangement of terminal land:
In the case of DCC types:
– A (arrangement in the width direction side or the width direction side and the corner);
– B (arrangement in the length direction side or the length direction side and the corner);
– C (arrangement in the corner only).
In the case of QCC types:
– A (arrangement in the side only);
– B (arrangement in the side and the corner).
6 Ceramic enclosure dimensions
The dimensions given in this document apply to all completed SMD-devices for frequency
control and selection. Only those dimensions which meet the requirements of IEC 61240 are
given.
7 Lead connections
Recommendations for the lead connections of all completed SMD-devices for frequency control
and selection are given in the following individual sheets. Lead connections shall always be
given in the detail specification.
8 Designation of ceramic enclosures
Table 1 is a list which includes all new enclosure types with their sheet numbers and brief
descriptions. Old enclosure names are also listed as references.

– 8 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Table 1 – Designation of ceramic enclosures
No. Type Old type Sheet No. Description
1 QCC-18/1809A QCC-18/01 Sheet 1 Ceramic, welded, eighteen leadless SMD outline
2 QCC-12/1407A Sheet 2 Ceramic, welded, twelve leadless SMD outline
3 DCC-4/1206A DCC-4/01 Sheet 3 Ceramic, four leadless SMD outline
4 DCC-2/1206A Sheet 4 Ceramic, two leadless SMD outline
5 QCC-10/9272A Sheet 5 Ceramic, welded, ten leadless SMD outline
6 DCC-4/9070A Sheet 6 Ceramic, welded, four leadless SMD outline
7 DCC-4/8045B DCC-04/02, 03 Sheet 7 Ceramic, welded, four leadless SMD outline
8 DCC-2/8045B Sheet 8 Ceramic, welded, two leadless SMD outline
9 DCC-6/7834B Sheet 9 Ceramic, welded, six leadless SMD outline
10 DCC-6/7050A Sheet 10 Ceramic, welded, six leadless SMD outline
11 DCC-4/7050A DCC-4/08 Sheet 11 Ceramic, welded, four leadless SMD outline
12 DCC-4/7050B DCC-4/04, 05 Sheet 12 Ceramic, welded, four leadless SMD outline
13 QCC-10/7050A Sheet 13 Ceramic, welded, ten leadless SMD outline
14 QCC-6/7050A QCC-6/01, 02 Sheet 14 Ceramic, welded, six leadless SMD outline
15 DCC-6/6035A DCC-4/06, 07 Sheet 15 Ceramic, welded, six leadless SMD outline
16 DCC-4/6035C Sheet 16 Ceramic, welded, four leadless SMD outline
17 DCC-2/6035C Sheet 17 Ceramic, welded, two leadless SMD outline
18 QCC-8/5050A QCC-8/02 Sheet 18 Ceramic, welded, eight leadless SMD outline
19 QCC-12/5045A QCC-12/02 Sheet 19 Ceramic, welded, twelve leadless SMD outline
20 QCC-8/5045A Sheet 20 Ceramic, welded, eight leadless SMD outline
21 DCC-6/5032A Sheet 21 Ceramic, welded, six leadless SMD outline
22 DCC-4/5032A Sheet 22 Ceramic, welded, four leadless SMD outline
23 DCC-4/5032C Sheet 23 Ceramic, welded, four leadless SMD outline
24 DCC-2/5032B DCC-2/01 Sheet 24 Ceramic, welded, two leadless SMD outline
25 DCC-2/4818C Sheet 25 Ceramic, welded, two leadless SMD outline
26 DCC-2/4115C Sheet 26 Ceramic, welded, two leadless SMD outline
27 DCC-4/4025C DCC-6/01 Sheet 27 Ceramic, welded, four leadless SMD outline
28 QCC-8/3838A Sheet 28 Ceramic, welded, eight leadless SMD outline
29 DCC-6/3838A Sheet 29 Ceramic, welded, six leadless SMD outline
30 DCC-6/3225A Sheet 30 Ceramic, welded, six leadless SMD outline
31 DCC-4/3225C Sheet 31 Ceramic, welded, four leadless SMD outline
32 DCC-4/3215C Sheet 32 Ceramic, welded, four leadless SMD outline
33 DCC-2/3215C Sheet 33 Ceramic, welded, two leadless SMD outline
34 QCC-8/3030B Sheet 34 Ceramic, welded, eight leadless SMD outline
35 DCC-6/3030A Sheet 35 Ceramic, welded, six leadless SMD outline
36 DCC-6/2520A Sheet 36 Ceramic, welded, six leadless SMD outline
37 DCC-4/2520C/01,02,03 Sheet 37 Ceramic, welded, four leadless SMD outline
38 DCC-4/2020C Sheet 38 Ceramic, welded, six leadless SMD outline
39 DCC-6/2016A Sheet 39 Ceramic, welded, four six leadless SMD outline
40 DCC-4/2016C/01,02,03 Sheet 40 Ceramic, welded, four leadless SMD outline
41 DCC-2/2012C Sheet 41 Ceramic, welded, two leadless SMD outline
42 DCC-4/1612C/01,02 Sheet 42 Ceramic, welded, four leadless SMD outline
43 DCC-2/1612C Sheet 43 Ceramic, welded, two leadless SMD outline
44 DCC-2/1610C Sheet 44 Ceramic, welded, two leadless SMD outline
45 DCC-4/1210C Sheet 45 Ceramic, welded, four leadless SMD outline

© IEC 2020
No. Type Old type Sheet No. Description
46 DCC-8/3225A Sheet 46 Ceramic, welded, eight leadless SMD outline
47 DCC-4/1008C/0,1,02 Sheet 47 Ceramic, welded, four leadless SMD outline

– 10 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (18,0) 18,30
B – (9,0) 9,30
G
– – 2,00
K 0,50 – 1,10
L 1,20 – 1,80 Note
Actual size
B
IEC e – 2,54 –
y – – 0,10
A
15 14 13 12 11 10
16 9
2 3 4 5 6
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,10 mm for lead 1 to identity the orientation.
B
Ceramic, welded, eighteen leadless SMD outline – Scale
Type QCC-18/1809A 3: 1
Sheet 1
B
G
LB
© IEC 2020
Terminal land connections of Type QCC-18/1809A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Ground
2  Option
3  Option
4  Option
5  Option
6  Ground
7  Input/Output
8  Ground
9  Input/Output /Ground
10  Ground
11  Option
12  Option
13  Option
14  Option
15  Ground
16  Output/Input
17  Ground
18  Output/Input /Ground
– 12 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (14,0) 14,30
B – (6,5) 6,80
G – – 2,00
Actual size
K 0,50 – 1,10
IEC
L 1,70 – 2,30
B
e – 2,54 –
y – – 0,10
A
10 9 8
11 6
2 3 4
s
y s
e
K
IEC
Ceramic, welded, twelve leadless SMD outline – Scale
Type QCC-12/1407A 3: 1
Sheet 2
B
G
L
B
© IEC 2020
Terminal land connections of Type QCC-12/1407A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Option
2  Option
3  Ground
4  Option
5  Output/Input
6  Output/Input /Ground
7  Option
8  Ground
9  Option
10  Option
11  Input/Output
12  Input/Output /Ground
– 14 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,30
Actual size
K 1,80 – 2,20
IEC
L 1,30 – 1,90
B
e – 5,08 –
e – 3,90 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/1206A 3: 1
Sheet 3
G
B
e1
L
B
© IEC 2020
Terminal land connections of Type DCC-4/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 NC Ground
3 Terminal 2 Output
4 NC DC supply
– 16 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,70
K 1,60 – 2,20
Actual size
L 5,20 – 5,80
B
IEC
e – 5,08 –
y – – 0,10
A
1 2
s
y s
e
K
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/1206A 3: 1
Sheet 4
G
B
LB
© IEC 2020
Terminal land connections of Type DCC-2/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
– 18 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,2) 9,50
B – (7,2) 7,50
G – – 2,00
Actual size
K 0,60 – 1,20
IEC
L 0,80 – 1,40 Note
B
e – 2,54 –
y – – 0,10
A
8 7 6
9 5
10 4
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,00 mm for lead 1 to identify the orientation.
B
Ceramic, welded, ten leadless SMD outline – Scale
Type QCC-10/9272A 5: 1
Sheet 5
B
G
L
B
© IEC 2020
Terminal land connections of Type QCC-10/9272A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Input/Output /Ground
2  Input/Output
3  Ground
4  Ground
5  Ground
6  Output/Input /Ground
7  Output/Input
8  Option
9  Ground
10  Ground
– 20 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,0) 9,30
B – (7,0) 7,30
G – – 2,00
Actual size
K 1,10 – 1,70
IEC
L 0,90 – 1,50
B
e – 5,08 –
e – 5,80 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/9070A 5: 1
Sheet 6
e1 G
B
LB
© IEC 2020
Terminal land connections of Type DCC-4/9070A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
– 22 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (8,0) 8,30
B – (4,5) 4,80
G – – 2,00
Actual size
K 0,70 – 1,30
IEC
L 0,80 – 1,40
B
e – 2,54 –
e – 6,90 –
y – – 0,10
A
4 3
s
y s
e1
L
B
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/8045B 5: 1
Sheet 7
e G
B
K
© IEC 2020
Terminal land connections of Type DCC-4/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 Option Ground
3 Terminal 2 Output
4 Option DC supply
– 24 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max
A – (8,0) 8,30
B – (4,5) 4,80
G – – 1,60
Actual size
K 1,60 – 2,20
IEC
L 0,70 – 1,30
B
e – 7,00 –
y – – 0,10
A
s
y s
e
L
B
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/8045B 5: 1
Sheet 8
B
G
K
© IEC 2020
Terminal land connections of Type DCC-2/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
– 26 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,8) 8,10
B – (3,4) 3,70
G – – 1,20
Actual size
K 0,70 – 1,30
IEC
K 0,80 – 1,40
L 0,30 – 0,90
B1
L 1,10 – 1,70
B2
e – 6,70 –
e – 1,40 –
y – – 0,10
A
s
y s
e
K2
L
B2
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7834B 5: 1
Sheet 9
B
e
G
K
L
B
© IEC 2020
Terminal land connections of Type DCC-6/7834B

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Option
2 Option
3 Terminal 1
4 Option
5 Option
6 Terminal 2
– 28 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 2,00
Actual size
K 1,10 – 1,70
IEC
L 0,80 – 1,40
B
e – 2,54 –
e – 3,90 –
y – – 0,10
A
6 5 4
1 2
s
y s
e
K
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7050A 5: 1
Sheet 10
B
e
G
LB
© IEC 2020
Terminal land connections of Type DCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Output enable
2 NC
3 Ground
4 Output
5 Output
6 DC supply
– 30 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A ― (7,0) 7,30
B ― (5,0) 5,30
G ― ― 2,00
K 1,10 ― 1,70
L 0,80 ― 1,40
B
e ― 2,54 ―
. e ― 3,90 ―
y
― ― 0,10
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7050A 15: 1
Sheet 10
© IEC 2020
Terminal land connections of Type DCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Option
2 Option
3 Ground
4 Output
5 Option
6 DC supply
– 32 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,90
Actual size
K 1,10 – 1,70
IEC
L 0,90 – 1,50
B
e – 5,08 –
e – 3,80 –
y
– – 0,10
A
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050A 5: 1
Sheet 11
B
e1 G
L
B
© IEC 2020
Terminal land connections of Type DCC-4/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
– 34 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A ― (7,0) 7,30
B ― (5,0) 5,30
G
― ― 1,90
K 1,10 ― 1,70
L 0,90 ― 1,50
B
e ― 5,08 ―
e ― 3,80 ―
y
― ― 0,10
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050A 5: 1
Sheet 11
© IEC 2020
Terminal land connections of Type DCC-4/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Option
2 Ground
3 Output
4 DC supply
– 36 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,50
Actual size
K 0,70 – 1, 30
IEC
L 0,70 – 1,30
B
e – 2,54 –
e – 6,00 –
y – – 0,10
A
1 2
s
y s
e1
LB
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050B 5: 1
Sheet 12
B
e
G
K
© IEC 2020
Terminal land connections of Type DCC-4/7050B

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1
2 Option
3 Terminal 2
4 Option
– 38 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 2,00
Actual size
K 0,40 – 1,00
IEC
L 0,80 – 1,20 Note
B
e – 1,27 –
e – 4,00 –
y – – 0,10
A
8 7
1 2 3
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 1,60 mm for lead 1 to identify the orientation.
B
Ceramic, welded, ten leadless SMD outline – Scale
Type QCC-10/7050A 5: 1
Sheet 13
B
G
e
L
B
© IEC 2020
Terminal land connections of Type QCC-10/7050A

Crystal
No. Crystal unit Crystal oscillator SAW devices
filter
1 Option Option
2 Option Output/Input
3 Option Option
4 Ground Option
5 Output Option
6 Option Option
7 Option Input/Output
8 Option Option
9 DC supply Ground
Option/Control
10  Ground
voltage
– 40 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,50
K 0,70 – 1,30
Actual size
IEC
L 0,70 – 1,30
B
e – 2,54 –
e – 6,00 –
y – – 0,10
A
6 4
s
y s
e
L
B
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type QCC-6/7050A 5: 1
Sheet 14
B
e G
K
© IEC 2020
Terminal land connections of Type QCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  Option
3  Output/Input
4  Ground
5  Option
6  Input/Output
– 42 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,25
K 0,80 – 1,20
Actual size
IEC
L 1,30 1,70
B
e – 4,50 –
e – 2,50 –
y – – 0,10
A
6 4
1 2 3
s
y s
e
K K
2 1
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/6035A 5: 1
Sheet 15
G
B
e2
LB
© IEC 2020
Terminal land connections of Type DCC-6/6035A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground Ground
2  Ground Input/Output
3  Output/Input Ground
4  Ground Ground
5  Ground Output/Input
6  Input/Output Ground
– 44 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,20
Actual size
K 1,30 – 1,70
IEC
L 0,76 1,16
B
e – 2,54 –
e – 4,50 –
y – – 0,10
A
1 2
s
y s
e1
K
IEC
Scale
Ceramic, welded, four leadless SMD outline –
5: 1
Type DCC-4/6035C
Sheet 16
G
e
B
LB
© IEC 2020
Terminal land connections of Type DCC-4/6035C

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1 Control voltage
2 Option Ground
3 Terminal 2 Output
4 Option DC supply
– 46 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,60
Actual size
K 3,30 – 3,70
IEC
L 1,30 1,70
B
e – 4,50 –
y – – 0,10
A
s
y s
e1
L
B
IEC
Scale
Ceramic, welded, two leadless SMD outline –
5: 1
Type DCC-2/6035C
Sheet 17
B
G
K
© IEC 2020
Terminal land connections of Type DCC-2/6035C

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
– 48 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max
A – (5,0) 5,20
B – (5,0) 5,20
G – – 2,00
K 0,50 – 0,90
Actual size
IEC
L 1,00 – 1,40 Note
B
e – 1,27 –
e – 3,80 –
y – – 0,10
A
7 6 5
2 3
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 1,90 mm for lead 8 to identify the orientation.
B
Ceramic, welded, eight leadless SMD outline – Scale
Type QCC-8/5050A 5: 1
Sheet 18
B
G
e1
LB
© IEC 2020
Terminal land connections of Type QCC-8/5050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  Input/Output
3  Ground
4  Ground
5  Ground
6  Output/Input
7  Ground
8  Ground
– 50 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (4,5) 4,70
G – – 2,00
K 0,40 – 0,80
Actual size
IEC
L 0,60 – 1,00
B
e – 1,27 –
y – – 0,10
A
9 8
11 5
1 2 3
s
y s
e
K
IEC
Ceramic, welded, twelve leadless SMD outline – Scale
Type QCC-12/5045A 5: 1
Sheet 19
B
G
L
B
© IEC 2020
Terminal land connections of Type QCC-12/5045A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  To be specified
3  Ground
4  Input/Output /Ground
5  Output/Input
6  Output/Input /Ground
7  Ground
8  To be specified
9  Ground
10  Output/Input /Ground
11  Output/Input
12  Output/Input /Ground
– 52 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (4,5) 4,70
G – – 2,00
Actual size
K 0,50 – 0,90
IEC
L 0,60 – 1,00
B
e – 1,27 –
e – 4,20 –
y – – 0,10
A
7 5
1 3
s
y s
e1
K
IEC
Ceramic, welded, eight leadless SMD outline – Scale
Type QCC-8/5045A 5: 1
Sheet 20
B
G
e
LB
© IEC 2020
Terminal land connections of Type QCC-8/5045A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Control voltage Ground Ground
2 Option Ground Ground
3 Ground Ground Ground
4 Option Input/Output Input/Output
5 Output Ground Ground
6 Option Ground Ground
7 DC supply Ground Ground
8 Option Output/Input Output/Input

– 54 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (3,2) 3,40
G – – 1,40
Actual size K 0,62 – 0,66
IEC
L 0,80 – 1,20
B
e – 1,27 –
e – 2,20 –
y – – 0,10
A
6 5
1 2
s
y s
e
K
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/5032A 5: 1
Sheet 21
G
B
e2
L
B
© IEC 2020
Terminal land connections of Type DCC-6/5032A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Output Enable
2 NC
3 Ground
4 Output
5 Output
6 DC supply
– 56 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A ― (5,0) 5,20
B ― (3,2) 3,40
G
― ― 1,40
K 0,62 ― 0,66
L 0,80 ― 1,20
B
e
― 1,27 ―
e ― 2,20 ―
y ― – 0,10
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/5032A 5: 1
Sheet 21
© IEC 2020
Terminal land connections of Type DCC-6/5032A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Option
2 Option
3 Ground
4 Output
5 Option
6 DC supply
– 58 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (3,2) 3,40
G – – 1,20
Actual size K 1,00 – 1,40
IEC
L 0,80 – 1,20
B
e – 2,54 –
e – 2,20 –
y – – 0,10
A
4 3
1 2
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/5032A 5: 1
Sheet 22
G
B
e1
L
B
© IEC 2020
Terminal land connections of Type DCC-4/5032A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
...

IEC 61837-2 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface mounted piezoelectric devices for frequency control and selection –
Standard outlines and terminal lead connections –
Part 2: Ceramic enclosures
Dispositifs piézoélectriques à montage en surface pour la commande et le choix
de la fréquence – Encombrements normalisés et connexions des sorties –
Partie 2: Enveloppes en céramique

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IEC 61837-2 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface mounted piezoelectric devices for frequency control and selection –

Standard outlines and terminal lead connections –

Part 2: Ceramic enclosures
Dispositifs piézoélectriques à montage en surface pour la commande et le choix

de la fréquence – Encombrements normalisés et connexions des sorties –

Partie 2: Enveloppes en céramique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.140 ISBN 978-2-8322-6234-4

– 2 – IEC 61837-2:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Configuration of enclosures . 6
5 Designation of types . 6
6 Ceramic enclosure dimensions . 7
7 Lead connections . 7
8 Designation of ceramic enclosures . 7
Sheet 1 . 9
Sheet 2 . 11
Sheet 3 . 13
Sheet 4 . 15
Sheet 5 . 17
Sheet 6 . 19
Sheet 7 . 21
Sheet 8 . 23
Sheet 9 . 25
Sheet 10 . 27
Sheet 11 . 29
Sheet 12 . 31
Sheet 13 . 33
Sheet 14 . 35
Sheet 15 . 37
Sheet 16 . 39
Sheet 17 . 41
Sheet 18 . 43
Sheet 19 . 45
Sheet 20 . 47
Sheet 21 . 49
Sheet 22 . 51
Sheet 23 . 53
Sheet 24 . 55
Sheet 25 . 57
Sheet 26 . 59
Sheet 27 . 61
Sheet 28 . 63
Sheet 29 . 65
Sheet 30 . 67
Sheet 31 . 69
Sheet 32 . 71
Sheet 33 . 73

Sheet 34 . 75
Sheet 35 . 77
Sheet 36 . 79
Sheet 37 . 81
Sheet 38 . 83
Sheet 39 . 85
Sheet 40 . 87
Sheet 41 . 89
Sheet 42 . 91
Sheet 43 . 93
Sheet 44 . 95
Sheet 45 . 97
Bibliography . 99

Table 1 – Designation of ceramic enclosures . 8

– 4 – IEC 61837-2:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61837-2 has been prepared by IEC technical committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control,
selection and detection.
This bilingual version (2018-11) corresponds to the monolingual English version, published in
2018-05.
This third edition cancels and replaces the second edition published in 2011 and
Amendment 1:2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of the figures to match the notation of the drawings of IEC 61240:2016;
b) addition of 7 enclosures as follows: DCC-6/5032A, DCC-6/3225A, DCC-4/3215C,
DCC-6/2016A, DCC-2/2012C, DCC-2/1610C, DCC-4/1210C.

As a result, this third edition contains a total of 45 enclosure types, which are listed in Table 1.
This International Standard is to be read in conjunction with IEC 61240:2016.
The text of this International Standard is based on the following documents:
CDV Report on voting
49/1252/CDV 49/1276/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
The French version of this standard has not been voted upon.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61837 series, published under the general title Surface mounted
piezoelectric devices for frequency control and selection – Standard outlines and terminal lead
connections , can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – IEC 61837-2:2018 © IEC 2018
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
1 Scope
This part of IEC 61837 deals with standard outlines and terminal lead connections as they apply
to surface-mounted devices (SMD) for frequency control and selection in ceramic enclosures,
and is based on IEC 61240:2016.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61240:2016, Piezoelectric devices – Preparation of outline drawings of surface-mounted
devices (SMD) for frequency control and selection – General rules
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Configuration of enclosures
The enclosures of the surface-mounted devices are made of ceramic materials with the
terminals of deposited metal film (leadless type) based on a descriptive designation system for
semiconductors – devices packages.
The configuration symbols are shown as follows:
• DCC (dual chip carrier);
• QCC (quad chip carrier).
5 Designation of types
The designation of types is shown on four parts as follows:

B C D D’
A E
IEC
A: Configuration symbol of enclosures:
– DCC (dual chip carrier);
– QCC (quad chip carrier).
B: Structure of terminal leads: leadless type has no mark.
C: Number of terminal leads
D: Serial number of both figures
E: Arrangement of terminal land:
In the case of DCC types:
– A (arrangement in the width direction side or the width direction side and the corner);
– B (arrangement in the length direction side or the length direction side and the corner);
– C (arrangement in the corner only).
In the case of QCC types:
– A (arrangement in the side only);
– B (arrangement in the side and the corner).
6 Ceramic enclosure dimensions
The dimensions given in this document apply to all completed SMD-devices for frequency
control and selection. Only those dimensions which meet the requirements of IEC 61240 are
given.
7 Lead connections
Recommendations for the lead connections of all completed SMD-devices for frequency control
and selection are given in the following individual sheets. Lead connections shall always be
given in the detail specification.
8 Designation of ceramic enclosures
Table 1 is a list which includes all new enclosure types with their sheet numbers and brief
descriptions. Old enclosure names are also listed as references.

– 8 – IEC 61837-2:2018 © IEC 2018
Table 1 – Designation of ceramic enclosures
No. Type Old type Sheet No. Description
1 QCC-18/1809A QCC-18/01 Sheet 1 Ceramic, welded, eighteen leadless SMD outline
2 QCC-12/1407A Sheet 2 Ceramic, welded, twelve leadless SMD outline
3 DCC-4/1206A DCC-4/01 Sheet 3 Ceramic, four leadless SMD outline
4 DCC-2/1206A Sheet 4 Ceramic, two leadless SMD outline
5 QCC-10/9272A Sheet 5 Ceramic, welded, ten leadless SMD outline
6 DCC-4/9070A Sheet 6 Ceramic, welded, four leadless SMD outline
7 DCC-4/8045B DCC-04/02, 03 Sheet 7 Ceramic, welded, four leadless SMD outline
8 DCC-2/8045B Sheet 8 Ceramic, welded, two leadless SMD outline
9 DCC-6/7834B Sheet 9 Ceramic, welded, six leadless SMD outline
10 DCC-6/7050A Sheet 10 Ceramic, welded, six leadless SMD outline
11 DCC-4/7050A DCC-4/08 Sheet 11 Ceramic, welded, four leadless SMD outline
12 DCC-4/7050B DCC-4/04, 05 Sheet 12 Ceramic, welded, four leadless SMD outline
13 QCC-10/7050A Sheet 13 Ceramic, welded, ten leadless SMD outline
14 QCC-6/7050A QCC-6/01, 02 Sheet 14 Ceramic, welded, six leadless SMD outline
15 DCC-6/6035A DCC-4/06, 07 Sheet 15 Ceramic, welded, six leadless SMD outline
16 DCC-4/6035C Sheet 16 Ceramic, welded, four leadless SMD outline
17 DCC-2/6035C Sheet 17 Ceramic, welded, two leadless SMD outline
18 QCC-8/5050A QCC-8/02 Sheet 18 Ceramic, welded, eight leadless SMD outline
19 QCC-12/5045A QCC-12/02 Sheet 19 Ceramic, welded, twelve leadless SMD outline
20 QCC-8/5045A Sheet 20 Ceramic, welded, eight leadless SMD outline
21 DCC-6/5032A Sheet 21 Ceramic, welded, six leadless SMD outline
22 DCC-4/5032A Sheet 22 Ceramic, welded, four leadless SMD outline
23 DCC-4/5032C Sheet 23 Ceramic, welded, four leadless SMD outline
24 DCC-2/5032B DCC-2/01 Sheet 24 Ceramic, welded, two leadless SMD outline
25 DCC-2/4818C Sheet 25 Ceramic, welded, two leadless SMD outline
26 DCC-2/4115C Sheet 26 Ceramic, welded, two leadless SMD outline
27 DCC-4/4025C DCC-6/01 Sheet 27 Ceramic, welded, four leadless SMD outline
28 QCC-8/3838A Sheet 28 Ceramic, welded, eight leadless SMD outline
29 DCC-6/3838A Sheet 29 Ceramic, welded, six leadless SMD outline
30 DCC-6/3225A Sheet 30 Ceramic, welded, six leadless SMD outline
31 DCC-4/3225C Sheet 31 Ceramic, welded, four leadless SMD outline
32 DCC-4/3215C Sheet 32 Ceramic, welded, four leadless SMD outline
33 DCC-2/3215C Sheet 33 Ceramic, welded, two leadless SMD outline
34 QCC-8/3030B Sheet 34 Ceramic, welded, eight leadless SMD outline
35 DCC-6/3030A Sheet 35 Ceramic, welded, six leadless SMD outline
36 DCC-6/2520A Sheet 36 Ceramic, welded, six leadless SMD outline
37 DCC-4/2520C/01,02,03 Sheet 37 Ceramic, welded, four leadless SMD outline
38 DCC-4/2020C Sheet 38 Ceramic, welded, six leadless SMD outline
39 DCC-6/2016A Sheet 39 Ceramic, welded, four leadless SMD outline
40 DCC-4/2016C/01,02,03 Sheet 40 Ceramic, welded, four leadless SMD outline
41 DCC-2/2012C Sheet 41 Ceramic, welded, two leadless SMD outline
42 DCC-4/1612C/01,02 Sheet 42 Ceramic, welded, four leadless SMD outline
43 DCC-2/1612C Sheet 43 Ceramic, welded, two leadless SMD outline
44 DCC-2/1610C Sheet 44 Ceramic, welded, two leadless SMD outline
45 DCC-4/1210C Sheet 45 Ceramic, welded, four leadless SMD outline

Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (18,0) 18,30
B – (9,0) 9,30
G
– – 2,00
K 0,50 – 1,10
L 1,20 – 1,80 Note
Actual size
B
IEC e – 2,54 –
y – – 0,10
A
15 14 13 12 11 10
16 9
2 3 4 5 6
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,10 mm for lead 1 to identity the orientation.
B
Ceramic, welded, eighteen leadless SMD outline – Scale
Type QCC-18/1809A 3: 1
Sheet 1
B
G
LB
– 10 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-18/1809A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Ground
2  Option
3  Option
4  Option
5  Option
6  Ground
7  Input/Output
8  Ground
9  Input/Output /Ground
10  Ground
11  Option
12  Option
13  Option
14  Option
15  Ground
16  Output/Input
17  Ground
18  Output/Input /Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (14,0) 14,30
B – (6,5) 6,80
G – – 2,00
Actual size
K 0,50 – 1,10
IEC
L 1,70 – 2,30
B
e – 2,54 –
y – – 0,10
A
10 9 8
11 6
2 3 4
s
y s
e
K
IEC
Ceramic, welded, twelve leadless SMD outline – Scale
Type QCC-12/1407A 3: 1
Sheet 2
B
G
L
B
– 12 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-12/1407A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Option
2  Option
3  Ground
4  Option
5  Output/Input
6  Output/Input /Ground
7  Option
8  Ground
9  Option
10  Option
11  Input/Output
12  Input/Output /Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,30
Actual size
K 1,80 – 2,20
IEC
L 1,30 – 1,90
B
e – 5,08 –
e – 3,90 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/1206A 3: 1
Sheet 3
G
B
e1
L
B
– 14 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 NC Ground
3 Terminal 2 Output
4 NC DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,70
K 1,60 – 2,20
Actual size
L 5,20 – 5,80
B
IEC
e – 5,08 –
y – – 0,10
A
1 2
s
y s
e
K
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/1206A 3: 1
Sheet 4
G
B
LB
– 16 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-2/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,2) 9,50
B – (7,2) 7,50
G – – 2,00
Actual size
K 0,60 – 1,20
IEC
L 0,80 – 1,40 Note
B
e – 2,54 –
y – – 0,10
A
8 7 6
9 5
10 4
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,00 mm for lead 1 to identify the orientation.
B
Ceramic, welded, ten leadless SMD outline – Scale
Type QCC-10/9272A 5: 1
Sheet 5
B
G
L
B
– 18 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-10/9272A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Input/Output /Ground
2  Input/Output
3  Ground
4  Ground
5  Ground
6  Output/Input /Ground
7  Output/Input
8  Option
9  Ground
10  Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,0) 9,30
B – (7,0) 7,30
G – – 2,00
Actual size
K 1,10 – 1,70
IEC
L 0,90 – 1,50
B
e – 5,08 –
e – 5,80 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/9070A 5: 1
Sheet 6
e1 G
B
LB
– 20 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/9070A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (8,0) 8,30
B – (4,5) 4,80
G – – 2,00
Actual size
K 0,70 – 1,30
IEC
L 0,80 – 1,40
B
e – 2,54 –
e – 6,90 –
y – – 0,10
A
4 3
s
y s
e1
L
B
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/8045B 5: 1
Sheet 7
e G
B
K
– 22 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 Option Ground
3 Terminal 2 Output
4 Option DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max
A – (8,0) 8,30
B – (4,5) 4,80
G – – 1,60
Actual size
K 1,60 – 2,20
IEC
L 0,70 – 1,30
B
e – 7,00 –
y – – 0,10
A
s
y s
e
L
B
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/8045B 5: 1
Sheet 8
B
G
K
– 24 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-2/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,8) 8,10
B – (3,4) 3,70
G – – 1,20
Actual size
K 0,70 – 1,30
IEC
K 0,80 – 1,40
L 0,30 – 0,90
B1
L 1,10 – 1,70
B2
e – 6,70 –
e – 1,40 –
y – – 0,10
A
s
y s
e
K2
L
B2
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7834B 5: 1
Sheet 9
B
e
G
K
L
B
– 26 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-6/7834B

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Option
2 Option
3 Terminal 1
4 Option
5 Option
6 Terminal 2
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 2,00
Actual size
K 1,10 – 1,70
IEC
L 0,80 – 1,40
B
e – 2,54 –
e – 3,90 –
y – – 0,10
A
6 5 4
1 2
s
y s
e
K
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7050A 5: 1
Sheet 10
B
e
G
LB
– 28 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Output enable
2 NC
3 Ground
4 Output
5 Output
6 DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,90
Actual size
K 1,10 – 1,70
IEC
L 0,90 – 1,50
B
e – 5,08 –
e – 3,80 –
y
– – 0,10
A
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050A 5: 1
Sheet 11
B
e1 G
L
B
– 30 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,50
Actual size
K 0,70 – 1, 30
IEC
L 0,70 – 1,30
B
e – 2,54 –
e – 6,00 –
y – – 0,10
A
1 2
s
y s
e1
LB
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050B 5: 1
Sheet 12
B
e
G
K
– 32 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/7050B

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1
2 Option
3 Terminal 2
4 Option
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 2,00
Actual size
K 0,40 – 1,00
IEC
L 0,80 – 1,20 Note
B
e – 1,27 –
e – 4,00 –
y – – 0,10
A
8 7
1 2 3
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 1,60 mm for lead 1 to identify the orientation.
B
Ceramic, welded, ten leadless SMD outline – Scale
Type QCC-10/7050A 5: 1
Sheet 13
B
G
e
L
B
– 34 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-10/7050A

Crystal
No. Crystal unit Crystal oscillator SAW devices
filter
1 Option Option
2 Option Output/Input
3 Option Option
4 Ground Option
5 Output Option
6 Option Option
7 Option Input/Output
8 Option Option
9 DC supply Ground
Option/Control
10  Ground
voltage
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,50
K 0,70 – 1,30
Actual size
IEC
L 0,70 – 1,30
B
e – 2,54 –
e – 6,00 –
y – – 0,10
A
6 4
s
y s
e
L
B
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type QCC-6/7050A 5: 1
Sheet 14
B
e G
K
– 36 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  Option
3  Output/Input
4  Ground
5  Option
6  Input/Output
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,25
K 0,80 – 1,20
Actual size
IEC
L 1,30 1,70
B
e – 4,50 –
e – 2,50 –
y – – 0,10
A
6 4
1 2 3
s
y s
e
K K
2 1
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/6035A 5: 1
Sheet 15
G
B
e2
LB
– 38 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-6/6035A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground Ground
2  Ground Input/Output
3  Output/Input Ground
4  Ground Ground
5  Ground Output/Input
6  Input/Output Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,20
K 1,30 – 1,70
Actual size
IEC
L 0,76 1,16
B
e – 2,54 –
e – 4,50 –
y – – 0,10
A
1 2
s
y s
e1
K
IEC
Scale
Ceramic, welded, four leadless SMD outline –
5: 1
Type DCC-4/6035C
Sheet 16
G
e
B
L
B
– 40 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/6035C

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1 Control voltage
2 Option Ground
3 Terminal 2 Output
4 Option DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,60
Actual size
K 3,30 – 3,70
IEC
L 1,30 1,70
B
e – 4,50 –
y – – 0,10
A
s
y s
e1
L
B
IEC
Scale
Ceramic, welded, two leadless SMD outline –
5: 1
Type DCC-2/6035C
Sheet 17
B
G
K
– 42 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-2/6035C

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
Dimensions (mm)
Ref. Notes
Min. Nom. Max
A – (5,0) 5,20
B – (5,0) 5,20
G – – 2,00
K 0,50 – 0,90
Actual size
IEC
L 1,00 – 1,40 Note
B
e – 1,27 –
e – 3,80 –
y – – 0,10
A
7 6 5
2 3
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 1,90 mm for lead 8 to identify the orientation.
B
Ceramic, welded, eight leadless SMD outline – Scale
Type QCC-8/5050A 5: 1
Sheet 18
B
G
e1
LB
– 44 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-8/5050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  Input/Output
3  Ground
4  Ground
5  Ground
6  Output/Input
7  Ground
8  Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (4,5) 4,70
G – – 2,00
K 0,40 – 0,80
Actual size
IEC
L 0,60 – 1,00
B
e – 1,27 –
y – – 0,10
A
9 8
11 5
1 2 3
s
y s
e
K
IEC
Ceramic, welded, twelve leadless SMD outline – Scale
Type QCC-12/5045A 5: 1
Sheet 19
B
G
L
B
– 46 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-12/5045A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  To be specified
3  Ground
4  Input/Output /Ground
5  Output/Input
6  Output/Input /Ground
7  Ground
8  To be specified
9  Ground
10  Output/Input /Ground
11  Output/Input
12  Output/Input /Ground
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (4,5) 4,70
G – – 2,00
Actual size
K 0,50 – 0,90
IEC
L 0,60 – 1,00
B
e – 1,27 –
e – 4,20 –
y – – 0,10
A
7 5
1 3
s
y s
e1
K
IEC
Ceramic, welded, eight leadless SMD outline – Scale
Type QCC-8/5045A 5: 1
Sheet 20
B
G
e
LB
– 48 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type QCC-8/5045A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Control voltage Ground Ground
2 Option Ground Ground
3 Ground Ground Ground
4 Option Input/Output Input/Output
5 Output Ground Ground
6 Option Ground Ground
7 DC supply Ground Ground
8 Option Output/Input Output/Input

Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (3,2) 3,40
G – – 1,40
Actual size K 0,62 – 0,66
IEC
L 0,80 – 1,20
B
e – 1,27 –
e – 2,20 –
y – – 0,10
A
6 5
1 2
s
y s
e
K
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/5032A 5: 1
Sheet 21
G
B
e2
L
B
– 50 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-6/5032A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Output Enable
2 NC
3 Ground
4 Output
5 Output
6 DC supply
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (3,2) 3,40
G – – 1,20
Actual size K 1,00 – 1,40
IEC
L 0,80 – 1,20
B
e – 2,54 –
e – 2,20 –
y – – 0,10
A
4 3
1 2
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/5032A 5: 1
Sheet 22
G
B
e1
L
B
– 52 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/5032A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
Dimensions (mm)
Ref. Notes
M
n.
om. Max.
A – (5,0) 5,20
B – (3,2) 3,40
G – – 0,90
Actual size
K 1,00 – 1,40
IEC
L 0,70 – 1,10
B
e – 3,80 –
e – 2,30 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/5032C 5: 1
Sheet 23
B
G
e2
LB
– 54 – IEC 61837-2:2018 © IEC 2018

Terminal land connections of Type DCC-4/5032C

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1 Option
2 Ground Gro
...

IEC 61837-2 ®
Edition 3.1 2020-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Surface mounted piezoelectric devices for frequency control and selection –
Standard outlines and terminal lead connections –
Part 2: Ceramic enclosures
Dispositifs piézoélectriques à montage en surface pour la commande et le choix
de la fréquence – Encombrements normalisés et connexions des sorties –
Partie 2: Enveloppes en céramique

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IEC 61837-2 ®
Edition 3.1 2020-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Surface mounted piezoelectric devices for frequency control and selection –

Standard outlines and terminal lead connections –

Part 2: Ceramic enclosures
Dispositifs piézoélectriques à montage en surface pour la commande et le choix

de la fréquence – Encombrements normalisés et connexions des sorties –

Partie 2: Enveloppes en céramique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.140 ISBN 978-2-8322-9295-2

IEC 61837-2 ®
Edition 3.1 2020-09
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Surface mounted piezoelectric devices for frequency control and selection –
Standard outlines and terminal lead connections –
Part 2: Ceramic enclosures
Dispositifs piézoélectriques à montage en surface pour la commande et le choix
de la fréquence – Encombrements normalisés et connexions des sorties –
Partie 2: Enveloppes en céramique

– 2 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Configuration of enclosures . 6
5 Designation of types . 6
6 Ceramic enclosure dimensions . 7
7 Lead connections . 7
8 Designation of ceramic enclosures . 7
Sheet 1 . 10
Sheet 2 . 12
Sheet 3 . 14
Sheet 4 . 16
Sheet 5 . 18
Sheet 6 . 20
Sheet 7 . 22
Sheet 8 . 24
Sheet 9 . 26
Sheet 10 . 30
Sheet 11 . 34
Sheet 12 . 36
Sheet 13 . 38
Sheet 14 . 40
Sheet 15 . 42
Sheet 16 . 44
Sheet 17 . 46
Sheet 18 . 48
Sheet 19 . 50
Sheet 20 . 52
Sheet 21 . 56
Sheet 22 . 60
Sheet 23 . 62
Sheet 24 . 64
Sheet 25 . 66
Sheet 26 . 68
Sheet 27 . 70
Sheet 28 . 72
Sheet 29 . 74
Sheet 30 . 78
Sheet 31 . 82
Sheet 32 . 84

© IEC 2020
Sheet 33 . 86
Sheet 34 . 88
Sheet 35 . 90
Sheet 36 . 92
Sheet 37 . 94
Sheet 38 . 96
Sheet 39 . 98
Sheet 40 . 102
Sheet 41 . 104
Sheet 42 . 108
Sheet 43 . 110
Sheet 44 . 112
Sheet 45 . 114
Sheet 46 . 116
Sheet 47 . 118
Bibliography . 120

Table 1 – Designation of ceramic enclosures . 8

– 4 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61837-2 edition 3.1 contains the third edition (2018-05) [documents 49/1252/CDV and
49/1276/RVC] and its amendment 1 (2020-09) [documents 49/1338/CDV and 49/1347/RVC].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red
text. A separate Final version with all changes accepted is available in this publication.

© IEC 2020
International Standard IEC 61837-2 has been prepared by IEC technical committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control,
selection and detection.
This third edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of the figures to match the notation of the drawings of IEC 61240:2016;
b) addition of 7 enclosures as follows: DCC-6/5032A, DCC-6/3225A, DCC-4/3215C,
DCC-6/2016A, DCC-2/2012C, DCC-2/1610C, DCC-4/1210C.
As a result, this third edition contains a total of 45 enclosure types, which are listed in Table 1.
This International Standard is to be read in conjunction with IEC 61240:2016.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61837 series, published under the general title Surface mounted
piezoelectric devices for frequency control and selection – Standard outlines and terminal lead
connections , can be found on the IEC website.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

– 6 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
SURFACE MOUNTED PIEZOELECTRIC DEVICES FOR
FREQUENCY CONTROL AND SELECTION – STANDARD
OUTLINES AND TERMINAL LEAD CONNECTIONS –

Part 2: Ceramic enclosures
1 Scope
This part of IEC 61837 deals with standard outlines and terminal lead connections as they apply
to surface-mounted devices (SMD) for frequency control and selection in ceramic enclosures,
and is based on IEC 61240:2016.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61240:2016, Piezoelectric devices – Preparation of outline drawings of surface-mounted
devices (SMD) for frequency control and selection – General rules
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Configuration of enclosures
The enclosures of the surface-mounted devices are made of ceramic materials with the
terminals of deposited metal film (leadless type) based on a descriptive designation system for
semiconductors – devices packages.
The configuration symbols are shown as follows:
• DCC (dual chip carrier);
• QCC (quad chip carrier).
5 Designation of types
The designation of types is shown on four parts as follows:

© IEC 2020
B C D D’
A E
IEC
A: Configuration symbol of enclosures:
– DCC (dual chip carrier);
– QCC (quad chip carrier).
B: Structure of terminal leads: leadless type has no mark.
C: Number of terminal leads
D: Serial number of both figures
E: Arrangement of terminal land:
In the case of DCC types:
– A (arrangement in the width direction side or the width direction side and the corner);
– B (arrangement in the length direction side or the length direction side and the corner);
– C (arrangement in the corner only).
In the case of QCC types:
– A (arrangement in the side only);
– B (arrangement in the side and the corner).
6 Ceramic enclosure dimensions
The dimensions given in this document apply to all completed SMD-devices for frequency
control and selection. Only those dimensions which meet the requirements of IEC 61240 are
given.
7 Lead connections
Recommendations for the lead connections of all completed SMD-devices for frequency control
and selection are given in the following individual sheets. Lead connections shall always be
given in the detail specification.
8 Designation of ceramic enclosures
Table 1 is a list which includes all new enclosure types with their sheet numbers and brief
descriptions. Old enclosure names are also listed as references.

– 8 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Table 1 – Designation of ceramic enclosures
No. Type Old type Sheet No. Description
1 QCC-18/1809A QCC-18/01 Sheet 1 Ceramic, welded, eighteen leadless SMD outline
2 QCC-12/1407A Sheet 2 Ceramic, welded, twelve leadless SMD outline
3 DCC-4/1206A DCC-4/01 Sheet 3 Ceramic, four leadless SMD outline
4 DCC-2/1206A Sheet 4 Ceramic, two leadless SMD outline
5 QCC-10/9272A Sheet 5 Ceramic, welded, ten leadless SMD outline
6 DCC-4/9070A Sheet 6 Ceramic, welded, four leadless SMD outline
7 DCC-4/8045B DCC-04/02, 03 Sheet 7 Ceramic, welded, four leadless SMD outline
8 DCC-2/8045B Sheet 8 Ceramic, welded, two leadless SMD outline
9 DCC-6/7834B Sheet 9 Ceramic, welded, six leadless SMD outline
10 DCC-6/7050A Sheet 10 Ceramic, welded, six leadless SMD outline
11 DCC-4/7050A DCC-4/08 Sheet 11 Ceramic, welded, four leadless SMD outline
12 DCC-4/7050B DCC-4/04, 05 Sheet 12 Ceramic, welded, four leadless SMD outline
13 QCC-10/7050A Sheet 13 Ceramic, welded, ten leadless SMD outline
14 QCC-6/7050A QCC-6/01, 02 Sheet 14 Ceramic, welded, six leadless SMD outline
15 DCC-6/6035A DCC-4/06, 07 Sheet 15 Ceramic, welded, six leadless SMD outline
16 DCC-4/6035C Sheet 16 Ceramic, welded, four leadless SMD outline
17 DCC-2/6035C Sheet 17 Ceramic, welded, two leadless SMD outline
18 QCC-8/5050A QCC-8/02 Sheet 18 Ceramic, welded, eight leadless SMD outline
19 QCC-12/5045A QCC-12/02 Sheet 19 Ceramic, welded, twelve leadless SMD outline
20 QCC-8/5045A Sheet 20 Ceramic, welded, eight leadless SMD outline
21 DCC-6/5032A Sheet 21 Ceramic, welded, six leadless SMD outline
22 DCC-4/5032A Sheet 22 Ceramic, welded, four leadless SMD outline
23 DCC-4/5032C Sheet 23 Ceramic, welded, four leadless SMD outline
24 DCC-2/5032B DCC-2/01 Sheet 24 Ceramic, welded, two leadless SMD outline
25 DCC-2/4818C Sheet 25 Ceramic, welded, two leadless SMD outline
26 DCC-2/4115C Sheet 26 Ceramic, welded, two leadless SMD outline
27 DCC-4/4025C DCC-6/01 Sheet 27 Ceramic, welded, four leadless SMD outline
28 QCC-8/3838A Sheet 28 Ceramic, welded, eight leadless SMD outline
29 DCC-6/3838A Sheet 29 Ceramic, welded, six leadless SMD outline
30 DCC-6/3225A Sheet 30 Ceramic, welded, six leadless SMD outline
31 DCC-4/3225C Sheet 31 Ceramic, welded, four leadless SMD outline
32 DCC-4/3215C Sheet 32 Ceramic, welded, four leadless SMD outline
33 DCC-2/3215C Sheet 33 Ceramic, welded, two leadless SMD outline
34 QCC-8/3030B Sheet 34 Ceramic, welded, eight leadless SMD outline
35 DCC-6/3030A Sheet 35 Ceramic, welded, six leadless SMD outline
36 DCC-6/2520A Sheet 36 Ceramic, welded, six leadless SMD outline
37 DCC-4/2520C/01,02,03 Sheet 37 Ceramic, welded, four leadless SMD outline
38 DCC-4/2020C Sheet 38 Ceramic, welded, six leadless SMD outline
39 DCC-6/2016A Sheet 39 Ceramic, welded, four six leadless SMD outline
40 DCC-4/2016C/01,02,03 Sheet 40 Ceramic, welded, four leadless SMD outline
41 DCC-2/2012C Sheet 41 Ceramic, welded, two leadless SMD outline
42 DCC-4/1612C/01,02 Sheet 42 Ceramic, welded, four leadless SMD outline
43 DCC-2/1612C Sheet 43 Ceramic, welded, two leadless SMD outline
44 DCC-2/1610C Sheet 44 Ceramic, welded, two leadless SMD outline
45 DCC-4/1210C Sheet 45 Ceramic, welded, four leadless SMD outline

© IEC 2020
No. Type Old type Sheet No. Description
46 DCC-8/3225A Sheet 46 Ceramic, welded, eight leadless SMD outline
47 DCC-4/1008C/0,1,02 Sheet 47 Ceramic, welded, four leadless SMD outline

– 10 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (18,0) 18,30
B – (9,0) 9,30
G
– – 2,00
K 0,50 – 1,10
L 1,20 – 1,80 Note
Actual size
B
IEC e – 2,54 –
y – – 0,10
A
15 14 13 12 11 10
16 9
2 3 4 5 6
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,10 mm for lead 1 to identity the orientation.
B
Ceramic, welded, eighteen leadless SMD outline – Scale
Type QCC-18/1809A 3: 1
Sheet 1
B
G
LB
© IEC 2020
Terminal land connections of Type QCC-18/1809A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Ground
2  Option
3  Option
4  Option
5  Option
6  Ground
7  Input/Output
8  Ground
9  Input/Output /Ground
10  Ground
11  Option
12  Option
13  Option
14  Option
15  Ground
16  Output/Input
17  Ground
18  Output/Input /Ground
– 12 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (14,0) 14,30
B – (6,5) 6,80
G – – 2,00
Actual size
K 0,50 – 1,10
IEC
L 1,70 – 2,30
B
e – 2,54 –
y – – 0,10
A
10 9 8
11 6
2 3 4
s
y s
e
K
IEC
Ceramic, welded, twelve leadless SMD outline – Scale
Type QCC-12/1407A 3: 1
Sheet 2
B
G
L
B
© IEC 2020
Terminal land connections of Type QCC-12/1407A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Option
2  Option
3  Ground
4  Option
5  Output/Input
6  Output/Input /Ground
7  Option
8  Ground
9  Option
10  Option
11  Input/Output
12  Input/Output /Ground
– 14 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,30
Actual size
K 1,80 – 2,20
IEC
L 1,30 – 1,90
B
e – 5,08 –
e – 3,90 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/1206A 3: 1
Sheet 3
G
B
e1
L
B
© IEC 2020
Terminal land connections of Type DCC-4/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 NC Ground
3 Terminal 2 Output
4 NC DC supply
– 16 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (12,0) 12,30
B – (5,5) 5,80
G – – 2,70
K 1,60 – 2,20
Actual size
L 5,20 – 5,80
B
IEC
e – 5,08 –
y – – 0,10
A
1 2
s
y s
e
K
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/1206A 3: 1
Sheet 4
G
B
LB
© IEC 2020
Terminal land connections of Type DCC-2/1206A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
– 18 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,2) 9,50
B – (7,2) 7,50
G – – 2,00
Actual size
K 0,60 – 1,20
IEC
L 0,80 – 1,40 Note
B
e – 2,54 –
y – – 0,10
A
8 7 6
9 5
10 4
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 2,00 mm for lead 1 to identify the orientation.
B
Ceramic, welded, ten leadless SMD outline – Scale
Type QCC-10/9272A 5: 1
Sheet 5
B
G
L
B
© IEC 2020
Terminal land connections of Type QCC-10/9272A

Crystal
No. Crystal unit Crystal filter SAW devices
oscillator
1  Input/Output /Ground
2  Input/Output
3  Ground
4  Ground
5  Ground
6  Output/Input /Ground
7  Output/Input
8  Option
9  Ground
10  Ground
– 20 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (9,0) 9,30
B – (7,0) 7,30
G – – 2,00
Actual size
K 1,10 – 1,70
IEC
L 0,90 – 1,50
B
e – 5,08 –
e – 5,80 –
y – – 0,10
A
4 3
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/9070A 5: 1
Sheet 6
e1 G
B
LB
© IEC 2020
Terminal land connections of Type DCC-4/9070A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
– 22 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (8,0) 8,30
B – (4,5) 4,80
G – – 2,00
Actual size
K 0,70 – 1,30
IEC
L 0,80 – 1,40
B
e – 2,54 –
e – 6,90 –
y – – 0,10
A
4 3
s
y s
e1
L
B
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/8045B 5: 1
Sheet 7
e G
B
K
© IEC 2020
Terminal land connections of Type DCC-4/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1 Control voltage
2 Option Ground
3 Terminal 2 Output
4 Option DC supply
– 24 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max
A – (8,0) 8,30
B – (4,5) 4,80
G – – 1,60
Actual size
K 1,60 – 2,20
IEC
L 0,70 – 1,30
B
e – 7,00 –
y – – 0,10
A
s
y s
e
L
B
IEC
Ceramic, welded, two leadless SMD outline – Scale
Type DCC-2/8045B 5: 1
Sheet 8
B
G
K
© IEC 2020
Terminal land connections of Type DCC-2/8045B

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
– 26 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,8) 8,10
B – (3,4) 3,70
G – – 1,20
Actual size
K 0,70 – 1,30
IEC
K 0,80 – 1,40
L 0,30 – 0,90
B1
L 1,10 – 1,70
B2
e – 6,70 –
e – 1,40 –
y – – 0,10
A
s
y s
e
K2
L
B2
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7834B 5: 1
Sheet 9
B
e
G
K
L
B
© IEC 2020
Terminal land connections of Type DCC-6/7834B

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Option
2 Option
3 Terminal 1
4 Option
5 Option
6 Terminal 2
– 28 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 2,00
Actual size
K 1,10 – 1,70
IEC
L 0,80 – 1,40
B
e – 2,54 –
e – 3,90 –
y – – 0,10
A
6 5 4
1 2
s
y s
e
K
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7050A 5: 1
Sheet 10
B
e
G
LB
© IEC 2020
Terminal land connections of Type DCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Output enable
2 NC
3 Ground
4 Output
5 Output
6 DC supply
– 30 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A ― (7,0) 7,30
B ― (5,0) 5,30
G ― ― 2,00
K 1,10 ― 1,70
L 0,80 ― 1,40
B
e ― 2,54 ―
. e ― 3,90 ―
y
― ― 0,10
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/7050A 15: 1
Sheet 10
© IEC 2020
Terminal land connections of Type DCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Option
2 Option
3 Ground
4 Output
5 Option
6 DC supply
– 32 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,90
Actual size
K 1,10 – 1,70
IEC
L 0,90 – 1,50
B
e – 5,08 –
e – 3,80 –
y
– – 0,10
A
s
y s
e
K
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050A 5: 1
Sheet 11
B
e1 G
L
B
© IEC 2020
Terminal land connections of Type DCC-4/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Control voltage
2 Ground
3 Output
4 DC supply
– 34 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A ― (7,0) 7,30
B ― (5,0) 5,30
G
― ― 1,90
K 1,10 ― 1,70
L 0,90 ― 1,50
B
e ― 5,08 ―
e ― 3,80 ―
y
― ― 0,10
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050A 5: 1
Sheet 11
© IEC 2020
Terminal land connections of Type DCC-4/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Option
2 Ground
3 Output
4 DC supply
– 36 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,50
Actual size
K 0,70 – 1, 30
IEC
L 0,70 – 1,30
B
e – 2,54 –
e – 6,00 –
y – – 0,10
A
1 2
s
y s
e1
LB
IEC
Ceramic, welded, four leadless SMD outline – Scale
Type DCC-4/7050B 5: 1
Sheet 12
B
e
G
K
© IEC 2020
Terminal land connections of Type DCC-4/7050B

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1 Terminal 1
2 Option
3 Terminal 2
4 Option
– 38 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 2,00
Actual size
K 0,40 – 1,00
IEC
L 0,80 – 1,20 Note
B
e – 1,27 –
e – 4,00 –
y – – 0,10
A
8 7
1 2 3
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 1,60 mm for lead 1 to identify the orientation.
B
Ceramic, welded, ten leadless SMD outline – Scale
Type QCC-10/7050A 5: 1
Sheet 13
B
G
e
L
B
© IEC 2020
Terminal land connections of Type QCC-10/7050A

Crystal
No. Crystal unit Crystal oscillator SAW devices
filter
1 Option Option
2 Option Output/Input
3 Option Option
4 Ground Option
5 Output Option
6 Option Option
7 Option Input/Output
8 Option Option
9 DC supply Ground
Option/Control
10  Ground
voltage
– 40 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (7,0) 7,30
B – (5,0) 5,30
G – – 1,50
K 0,70 – 1,30
Actual size
IEC
L 0,70 – 1,30
B
e – 2,54 –
e – 6,00 –
y – – 0,10
A
6 4
s
y s
e
L
B
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type QCC-6/7050A 5: 1
Sheet 14
B
e G
K
© IEC 2020
Terminal land connections of Type QCC-6/7050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  Option
3  Output/Input
4  Ground
5  Option
6  Input/Output
– 42 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,25
K 0,80 – 1,20
Actual size
IEC
L 1,30 1,70
B
e – 4,50 –
e – 2,50 –
y – – 0,10
A
6 4
1 2 3
s
y s
e
K K
2 1
IEC
Ceramic, welded, six leadless SMD outline – Scale
Type DCC-6/6035A 5: 1
Sheet 15
G
B
e2
LB
© IEC 2020
Terminal land connections of Type DCC-6/6035A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground Ground
2  Ground Input/Output
3  Output/Input Ground
4  Ground Ground
5  Ground Output/Input
6  Input/Output Ground
– 44 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,20
Actual size
K 1,30 – 1,70
IEC
L 0,76 1,16
B
e – 2,54 –
e – 4,50 –
y – – 0,10
A
1 2
s
y s
e1
K
IEC
Scale
Ceramic, welded, four leadless SMD outline –
5: 1
Type DCC-4/6035C
Sheet 16
G
e
B
LB
© IEC 2020
Terminal land connections of Type DCC-4/6035C

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1 Control voltage
2 Option Ground
3 Terminal 2 Output
4 Option DC supply
– 46 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (6,0) 6,20
B – (3,5) 3,70
G – – 1,60
Actual size
K 3,30 – 3,70
IEC
L 1,30 1,70
B
e – 4,50 –
y – – 0,10
A
s
y s
e1
L
B
IEC
Scale
Ceramic, welded, two leadless SMD outline –
5: 1
Type DCC-2/6035C
Sheet 17
B
G
K
© IEC 2020
Terminal land connections of Type DCC-2/6035C

No. Crystal unit Crystal oscillator Crystal filter SAW devices

1 Terminal 1
2 Terminal 2
– 48 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max
A – (5,0) 5,20
B – (5,0) 5,20
G – – 2,00
K 0,50 – 0,90
Actual size
IEC
L 1,00 – 1,40 Note
B
e – 1,27 –
e – 3,80 –
y – – 0,10
A
7 6 5
2 3
s
y s
e
K
IEC
NOTE Dimension L max. can be increased to 1,90 mm for lead 8 to identify the orientation.
B
Ceramic, welded, eight leadless SMD outline – Scale
Type QCC-8/5050A 5: 1
Sheet 18
B
G
e1
LB
© IEC 2020
Terminal land connections of Type QCC-8/5050A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  Input/Output
3  Ground
4  Ground
5  Ground
6  Output/Input
7  Ground
8  Ground
– 50 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
Dimensions (mm)
Ref. Notes
Min. Nom. Max.
A – (5,0) 5,20
B – (4,5) 4,70
G – – 2,00
K 0,40 – 0,80
Actual size
IEC
L 0,60 – 1,00
B
e – 1,27 –
y – – 0,10
A
9 8
11 5
1 2 3
s
y s
e
K
IEC
Ceramic, welded, twelve leadless SMD outline – Scale
Type QCC-12/5045A 5: 1
Sheet 19
B
G
L
B
© IEC 2020
Terminal land connections of Type QCC-12/5045A

No. Crystal unit Crystal oscillator Crystal filter SAW devices
1  Ground
2  To be specified
3  Ground
4  Input/Output /Ground
5  Output/Input
6  Output/Input /Ground
7  Ground
8  To be specified
9  Ground
10  Output/Input /Ground
11  Output/Input
12  Output/Input /Ground
– 52 – IEC 61837-2:2018+AMD1:2020 CSV
© IEC 2020
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