IEC 60679-3:2012

Quartz crystal controlled oscillators of assessed quality - Part 3: Standard outlines and lead connections

IEC 60679-3:2012 specifies the outline dimensions and lead connections for quartz crystal controlled oscillators with lead enclosures. This edition includes the following significant technical changes with respect to the previous edition:
- CO 01, CO 07, CO 10, CO 17 and CO 18 were deleted;
- The current pin layout of CO 06 was deleted. And new pin layout of CO 06 was added as CO 40;
- New layout of CO 15 was added as CO 41;
- Two new enclosures, CO 42 and CO 43 were added. Therefore revised edition includes 15 types of enclosures as in Table 1 of Clause 5.

Oscillateurs pilotés par quartz sous assurance de la qualité - Partie 3: Encombrements normalisés et connexions des sorties

La CEI 60679-3:2012 spécifie les encombrements normalisés et les connexions des sorties des oscillateurs à quartz comportant des enveloppes avec sorties. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- CO 01, CO 07, CO 10, CO 17 et CO 18 ont été supprimés;
- La disposition actuelle des broches de CO 06 a été supprimée. Une nouvelle disposition des broches de CO 06 a été ajoutée sous le nom CO 40;
- Une nouvelle disposition de CO 15 a été ajoutée sous le nom CO 41;
- Deux nouveaux boîtiers, CO 42 et CO 43, ont été ajoutés. L'édition révisée inclut donc les 15 types de boîtiers présentés dans le Tableau 1 de l'Article 5.

General Information

• Status: Published
• Publication Date: 13-Dec-2012
• ICS: 31.140 - Piezoelectric devices
• Technical Committee: TC 49 - Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection
• Current Stage: PPUB - Publication issued
• Start Date: 31-Jan-2013
• Completion Date: 14-Dec-2012

Relations

• Revises: IEC 60679-3:2001 - Quartz crystal controlled oscillators of assessed quality - Part 3: Standard outlines and lead connections
• Effective Date: 05-Sep-2023

Overview

IEC 60679-3:2012 is an international standard published by the International Electrotechnical Commission (IEC) that specifies standard outlines and lead connections for quartz crystal controlled oscillators of assessed quality. This third edition, released in 2012, focuses on quartz crystal oscillators housed in lead enclosures. It defines the outline dimensions and lead configurations necessary to ensure mechanical interchangeability and reliable electrical performance.

The standard provides a framework to harmonize design aspects of these oscillators, promoting consistency and interoperability across manufacturers and applications. Key updates in this version include deletion of certain enclosure types (CO 01, CO 07, CO 10, CO 17, CO 18) and addition of new enclosure types and pin layouts (including CO 40, CO 41, CO 42, and CO 43), resulting in a total of 15 recognized enclosure types.

Key Topics

• Outline Dimensions
  IEC 60679-3:2012 specifies precise outline dimensions of quartz crystal oscillator enclosures, including maximum values for envelope size (length, width, height) and lead dimensions in millimeters. These standardized outlines ensure mechanical compatibility among components in electronic assemblies.

• Lead Connections and Terminations
  The standard provides detailed lead (terminal) configurations for soldering or plug-in applications, including minimum, nominal, and maximum dimensions for lead length, spacing, and cross-sectional size. A normative annex (Annex A) includes lead connections for oscillator types from CO 02 to CO 43, enabling designers to identify and use correct pin layouts.

• Standardized Designation System
  Each oscillator enclosure is identified by a type code (e.g., CO 02, CO 05, CO 40) accompanied by suffixes indicating enclosure height and lead length. This helps in clear communication and documentation of component specifications across the supply chain.

• Guidance for Outline Drawings
  The standard outlines best practices for creating uniform dimensional drawings, including third-angle projection, use of dimensional symbols, inclusion of actual-size sketches, and detailed tables. This supports consistent manufacturing and reduces ambiguity in technical documentation.

Applications

Quartz crystal controlled oscillators standardized under IEC 60679-3:2012 are widely used in applications demanding high frequency stability and reliability, including:

• Telecommunications
  For frequency control in transmitters, receivers, and network synchronization equipment.

• Consumer Electronics
  Embedded in devices such as clocks, computers, and mobile phones where precise timing is crucial.

• Industrial and Instrumentation
  Used in test and measurement systems where consistency and interchangeability of components reduce maintenance effort.

• Aerospace and Defense
  Employed in mission-critical systems requiring robust components complying with international quality standards.

By adhering to IEC 60679-3 requirements, manufacturers ensure that quartz crystal oscillators meet industry expectations for mechanical compatibility and functional performance, facilitating global use and replacements.

Related Standards

IEC 60679-3:2012 is part 3 of the broader IEC 60679 series that covers quartz crystal controlled oscillators of assessed quality. Related standards include:

• IEC 60679-1 – General requirements covering performance criteria and test methods for oscillators.
• IEC 60679-2 – Specifications for specific types of oscillators or their components.
• IEC 60679-4 – Additional parts addressing environmental or reliability testing for assessed quality oscillators.

Together, these IEC standards help unify the technical requirements and testing procedures for frequency control devices worldwide, ensuring system compatibility and quality assurance.

---

Keywords: IEC 60679-3, quartz crystal oscillator, oscillator enclosure, lead connections, frequency control devices, electronic component standard, mechanical interchangeability, crystal oscillator outline dimensions, international electrotechnical commission, oscillator pin layout.

Standards Content (Sample)

IEC 60679-3 ®
Edition 3.0 2012-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Quartz crystal controlled oscillators of assessed quality –
Part 3: Standard outlines and lead connections

Oscillateurs pilotés par quartz sous assurance de la qualité –
Partie 3: Encombrements normalisés et connexions des sorties

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IEC 60679-3 ®
Edition 3.0 2012-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Quartz crystal controlled oscillators of assessed quality –

Part 3: Standard outlines and lead connections

Oscillateurs pilotés par quartz sous assurance de la qualité –

Partie 3: Encombrements normalisés et connexions des sorties

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 31.140 ISBN 978-2-83220-569-3

– 2 – 60679-3 © IEC:2012
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Guidance for the standardization of outline drawings for frequency control and
selection devices . 5
3 Dimensions of crystal oscillator enclosure . 7
4 Lead connections . 7
5 Designation of crystal oscillator enclosure . 7
Annex A (normative) Lead connections of crystal oscillators – Type CO 02 to CO 43 . 23
Bibliography . 25

Figure 1 – Guidance for outline drawings . 6

Table 1 – Designation of crystal oscillator enclosures . 7
Table A.1 – Lead connections of crystal oscillators – Type CO 02 to CO 43 (1 of 2) . 23

60679-3 © IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
QUARTZ CRYSTAL CONTROLLED OSCILLATORS
OF ASSESSED QUALITY –
Part 3: Standard outlines and lead connections

FOREWORD
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60679-3 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 issued in 2001. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• CO 01, CO 07, CO 10, CO 17 and CO 18 were deleted;
• The current pin layout of CO 06 was deleted. And new pin layout of CO 06 was added as
CO 40;
• New layout of CO 15 was added as CO 41;
• Two new enclosures, CO 42 and CO 43 were added.
Therefore revised edition includes 15 types of enclosures as in Table 1 of Clause 5.

– 4 – 60679-3 © IEC:2012
The text of this standard is based on the following documents:
FDIS Report on voting
49/1009/FDIS 49/1021/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 60679 series, published under the general title Quartz crystal
controlled oscillators of assessed quality, can be found on the IEC website.
The committee has decided that the contents of this publication 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.
60679-3 © IEC:2012 – 5 –
QUARTZ CRYSTAL CONTROLLED OSCILLATORS
OF ASSESSED QUALITY –
Part 3: Standard outlines and lead connections

1 Scope
This part of IEC 60679 specifies the outline dimensions and lead connections for quartz crystal
controlled oscillators with lead enclosures.
2 Guidance for the standardization of outline drawings for frequency control
and selection devices
In order to achieve a uniform presentation of outline drawings for frequency control and
selection devices, the following shall be considered.
a) An outline drawing shall show all dimensional and geometrical characteristics of an
enclosure necessary to ensure mechanical interchangeability with all other enclosures of
the same outline. Enlarged and detailed view may be used, if necessary.
b) The outline drawing shall consist of three parts:
1) A drawing with dimensional symbols (capital letter) as shown in Figure 1 with applicable
footnotes, if necessary.
2) A tabular listing relating to the drawing symbol to the actual dimensions. Where possible,
this shall be shown on the same page as the drawing.
3) An "actual-size" sketch (scale 1:1).
c) The outline drawing shall be executed in the third-angle projection.
d) The function and identification of the lead connections (termination) shall be determined by
agreement between the supplier and user. They shall not be defined on the outline drawing.
e) Descriptive footnotes may be used at the bottom of/ or adjacent to, the drawing with proper
reference to the body of the drawing.
f) All dimensions shall be in millimeters.
g) 0utline dimensions A, B, C, D and E shall be listed with maximum values only.
h) If there are plural identical enclosures with different height (C), C shall be expressed with a
suffix number such as C , C , etc. The following letter and number after the basic type
1 2
number (four digits) indicate the enclosure height and lead length. The identity references
are given in the table in the sheet.
i) Lead (termination) cross-sectional dimensions shall be listed with minimum and maximum
values. If applicable, nominal dimensions may be added.
j) The spacing of the leads (termination) – symbol H – shall be listed with minimum, nominal
and maximum dimensions.
– 6 – 60679-3 © IEC:2012
E
D
C
Actual size
U
L
W
H
K B
A
IEC  2461/12
Dimensions (mm)
Ref. Footnotes
Min. Nom. Max.
A ― ― X
B ― ― X
C ― ― X
D ― ― X
E ― ― X
H X X X
K X ― X 1
L X ― X
U X ― ― 2
W X ― ― 2
Scale
Figure 1 – Guidance for outline drawings
2:1
Sheet – number
60679-3 © IEC:2012 – 7 –
k) Leads (terminations) for soldering application shall be specified with the minimum length
dimensions (symbol L) only.
Lead (termination) for plug-in application shall be specified with minimum and maximum length
dimensions.
l) If leads (terminations) are provided with an undercut, dimensions U and W shall be listed
with minimum dimensions only.
3 Dimensions of crystal oscillator enclosure
The dimensions in this standard apply to the completed quartz crystal controlled oscillators.
Only those dimensions which meet the requirements of the guidance for standardization of
outline drawings are given (see Clause 2).
4 Lead connections
Recommendations for the lead connections of quartz crystal controlled oscillators are given in
Annex A to this standard. Lead connections shall always be given in the detail specification.
5 Designation of crystal oscillator enclosure
Table 1 – Designation of crystal oscillator enclosures
No. Type Sheet No. Description
CO 02 A1
1 Sheet 1 Metal enclosure, welded, 4 to 18 lead crystal oscillator outline
CO 02 B1
2 CO 05 B1 Sheet 2 Metal enclosure, welded, eight lead crystal oscillator outline
CO 08 A1
3 CO 08 B1 Sheet 3 Metal enclosure, five lead crystal oscillator outline
CO 08 C1
CO 09 A1
4 Sheet 4 Metal enclosure, five lead crystal oscillator outline
CO 09 B1
CO 15 B1
5 Sheet 5 Metal enclosure, five lead crystal oscillator outline
CO 15 C1
CO 16 A1
6 CO 16 B1 Sheet 6 Metal enclosure, four lead crystal oscillator outline
CO 16 C1
CO 19 A1
7 Sheet 7 Metal enclosure, five lead crystal oscillator outline
CO 19 B1
8 CO 21 A1 Sheet 8 Metal enclosure, welded, four lead crystal oscillator outline
Plastic, moulded or ceramic, solder-glass sealed eight lead crystal oscillator
9 CO 22 A1 Sheet 9
outline
10 CO 23 B1 Sheet 10 Metal enclosure, welded, eight lead crystal oscillator outline
11 CO 24 A1 Sheet 11 Metal enclosure, four lead crystal oscillator outline
12 CO 40 Sheet 12 Metal enclosure, five lead crystal oscillator outline
CO 41 A1
13 Sheet 13 Metal enclosure, four lead crystal oscillator outline
CO 41 B1
14 CO 42 Sheet 14 Metal enclosure, four lead crystal oscillator outline
CO 43 A1
15 CO 43 B1 Sheet 15 Metal enclosure, five lead crystal oscillator outline
CO 43 C1
– 8 – 60679-3 © IEC:2012
C
L
N
K
Actual size H
(1)
H
(2)
H
1 7
19 20 15
B
H M
2 2
22 21
14 8
M
A IEC  2462/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 20,70
B ― ― 13,10
C ― ― 5,10 CO 02 A. 5
C ― ― 6,60 CO 02 B. 5
H 14,94 15,24 15,54
H 7,32 7,62 7,92
H 2,30 2,54 2,70
K 0,40 ― 0,53 3
L 5,85 ― ― CO 02 .1 5
M ― 12,20 ― 2
M ― 4,58 ― 2
N ― ― 0,75
Key
(1) An indication shall be provided to locate the position of lead No.1 (a 90° corner is shown on the drawing as an
example).
(2) If required, insulating standoffs shall be located within corner areas defined in the table by M and M .
1 2
If insulating tape standoffs are used, shaded areas as indicated are preferred and the tape may encircle the leads.
3 Leads with solderable finish shall not exceed K .
max
4 Ground leads may be created by a brazed or welded joint(s) to the base.
5 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information, which is given on another line.
EXAMPLE CO 02 B1 is the complete identity for the enclosure CO 02 with enclosure height C and lead length L.
Metal enclosure, welded, 4 to 18 lead crystal Scale

2:1
oscillator outline – Type CO 02
Sheet 1
60679-3 © IEC:2012 – 9 –
A
C
Actual size
L
K
P
Q
H
IEC  2463/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 13,20
C ― ― 8,90 CO 05 B. 2
H 6,70 7,10 7,50
K 0,40 ― 0,53 1
L 11,70 ― ― CO 05 .1 2
P 0,70 ― 0,90
Q 0,60 ― 0,80
1 Leads with solderable finish shall not exceed K .
max
2 The complete identity for any oscillator outline is a six digit type number consisting of the basic type
number (four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The
identity references are given in the table, where a dot indicates the missing information, which is given on another
line.
EXAMPLE CO 05 B1 is the complete identity for the enclosure CO 05 with enclosure height C and lead length L.

Metal enclosure, welded, eight lead crystal oscillator Scale

2:1
outline – Type CO 05
Sheet 2
– 10 – 60679-3 © IEC:2012
C
L
K
A
H
B
H
1 5
IEC  2464/12
Dimensions (mm) Identity
Ref. Footnotes
Min. Nom. Max. reference
A ― ― 36,10
B ― ― 27,20
C ― ― 10,20 CO 08 A. 1
C ― ― 12,80 CO 08 B. 1
C ― ― 19,40 CO 08 C. 1
H 25,25 25,40 25,65
H 17,55 17,80 18,05
K 0,70 ― 0,90
L 4,50 ― ― CO 08 .1 1
1 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information, which is given on another line.

EXAMPLE CO 08 A1 is the complete identity for enclosure CO 08 with enclosure height C1 and lead length L.

Metal enclosure, five lead crystal oscillator outline –
Scale
1:1
Type CO 08
Sheet 3
60679-3 © IEC:2012 – 11 –
C
L
K
2 K
A
H
H
H B
5 4 3
IEC  2465/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 36,10
B ― ― 27,20
C ― ― 16,10 CO 09 A. 1
C ― ― 19,40 CO 09 B. 1
H 17,75 17,80 18,05
H 20,15 20,35 20,55
H 22,65 22,90 23,15
K 0,70 ― 0,90
K ― M2 ―
L 4,50 ― ― CO 09 .1 1
1 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information, which is given on another line.

EXAMPLE CO 09 A1 is the complete identity for enclosure CO 09 with enclosure height C1 and lead length L.

Metal enclosure, five lead crystal oscillator outline –
Scale
1:1
Type CO 09
Sheet 4
– 12 – 60679-3 © IEC:2012
C
L
K
Actual size
A
H
H
1 2
B
H
IEC  2466/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 20,50
B ― ― 20,50
C ― ― 15,50 CO 15 B. 1,2
C ― ― 20,50 CO 15 C. 1,2
H 14,70 ― 15,54
H 14,70 ― 15,54
H 7,20 7,50 7,80
K 0,40 ― 0,60
L 4,00 ― ― CO 15 .1 1
1 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information, which is given on another line.
EXAMPLE CO 15 B1 is the complete identity for enclosure CO 15 with enclosure height C and lead length L.
2 The same pin layout of CO 15 but optionally with four of insulating standoffs is in CO 41 in Sheet 13.

Metal enclosure, five lead crystal oscillator outline –
Scale
2:1
Type CO 15
Sheet 5
60679-3 © IEC:2012 – 13 –
C
L
K
A
H
(1)
B
H
4 3
IEC  2467/12
Dimensions (mm) Identity
Ref. Footnotes
Min. Nom. Max. reference
A ― ― 31,00
B ― ― 31,00
C ― ― 11,00 CO 16 A. 2
C ― ― 16,00 CO 16 B. 2
C ― ― 21,00 CO 16 C. 2
H 21,70 22,00 22,30
H 21,70 22,00 22,30
K 0,70 ― 0,90
L 4,00 ― ― CO 16 .1 2
Key
(1) An indication shall be provided to locate the position of lead No. 1.
2 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The
identity references are given in the table, where a dot indicates the missing information, which is given on another
line.
EXAMPLE CO 16 A1 is the complete identity for enclosure CO 16 with enclosure height C and lead length L.
Metal enclosure, four lead crystal oscillator
Scale
1:1
outline – Type CO 16
Sheet 6
– 14 – 60679-3 © IEC:2012
C
L
L
K
K
A
H
H
1 2
H H
2 4 B
4 3
IEC  2468/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 41,00
B ― ― 41,00
C ― ― 31,00 CO 19 A. 1
C ― ― 60,00 CO 19 B. 1
H 9,70 10,00 10,30
H2 9,70 10,00 10,30
H 29,50 30,00 30,50
H 29,50 30,00 30,50
K 0,90 1,00 1,10
K ― M3 ―
L 5,00 ― ― CO 19 .1 1
L 7,00 ― ―
1 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information, which is given on another line.
EXAMPLE CO 19 B1 is the complete identity for enclosure CO 19 with enclosure height C and lead length L .
2 1
Metal enclosure, five lead crystal oscillator outline – Scale

1:1
Type CO 19
Sheet 7
60679-3 © IEC:2012 – 15 –
Actual size
C
L
K
A
(1)
(2)
B H
Z
4 3
H
IEC  2469/12
Dimensions (mm) Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 13,20
B ― ― 13,20
C ― ― 5,00 CO 21 A. 3
H1 7,32 7,62 7,92
H 7,32 7,62 7,92
K 0,40 ― 0,60
L 4,00 ― ― CO 21 .1 3
Z ― ― 13,00
Key
(1) An indication shall be provided to locate the position of lead No. 1 (a 90° corner is shown on the drawing as an
example).
(2) Three or more standoffs may be present within the circle defined by Z.
3 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information, which is given on another line.
EXAMPLE CO 21 A1 is therefore the complete identity of this enclosure.

Scale
Metal enclosure, welded, four lead crystal oscillator

outline – Type CO 21
2:1
Sheet 8
– 16 – 60679-3 © IEC:2012
A
Actual size
8 7 6
B
1 3 4
(1)
H
C
L
K
K
H
0°-15°
K
IEC  2470/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 12,80
B ― ― 7,00
C ― ― 5,08 CO 22 A. 2
H 2,29 2,54 2,79
H 7,37 7,62 7,87
K ― 1,52 ―
K 0,35 ― 0,65
K 0,20 ― 0,36
L 2,50 ― ― CO 22 .1 2
Key
(1) An indication shall be provided to locate the position of lead No. 1.
2 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information which is given on another line.
EXAMPLE CO 22 A1 is therefore the complete identity of this enclosure.

Plastic, moulded or ceramic, solder-glass sealed
Scale
4:1
eight lead crystal oscillator outline – Type CO 22
Sheet 9
60679-3 © IEC:2012 – 17 –
A
D
C
L
Actual size
K
2 6
H
Q
P
IEC  2471/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 9,40
C ― ― 6,60 CO 23 B. 2
D ― ― 8,40
H 4,83 5,08 5,33
K 0,40 ― 0,51
L 12,70 ― ― CO 23 .1 2
P ― ― 0,90 1
Q ― ― 1,00 1
1 An indication shall be provided to locate the position of lead No. 8 (a tag is shown on the drawing as an
example.).
2 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information which is given on another line.
EXAMPLE CO 23 B1 is therefore the complete identity of this enclosure.

Metal enclosure, welded, eight lead crystal oscillator
Scale
3,5:1
outline – Type CO 23
Sheet 10
– 18 – 60679-3 © IEC:2012
(2)
C
Actual size
L
A
1 K
K
A
H
(1)
1 2
B
H
4 3
IEC  2472/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 19,00
A ― 0,30 ―
B ― ― 12,50
C ― ― 10,00 CO 24 A. 3
H 14,84 15,24 15,54
H 7,22 7,62 7,92
K 0,40 ― 0,60
K 0,80 ― 1,20 4
L 3,00 ― ― CO 24 .1 3
Key
(1) The presence of lead No.1 is optional.
(2) The position of the hole should be on the side of leads No.1 and No.4.
3 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The
identity references are given in the table, where a dot indicates the missing information which is given on another
line.
EXAMPLE CO 24 A1 is therefore the complete identity for the enclosure.
4 The grounding tags are optional.

Scale
Metal enclosure, four lead crystal oscillator outline –

Type CO 24
2:1
Sheet 11
60679-3 © IEC:2012 – 19 –
C
L
K
A
H
H
B
H
IEC  2473/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 51,00 1
B ― ― 51,00 1
C ― ― 20,50
H  34,54 1
H  17,27 1
K ― 1,0
L 3,00 ― ―
1 This enclosure is the same size as CO 06 with different pin numbers.

Scale
Metal enclosure, five lead crystal oscillator outline –

Type CO 40
1:1
Sheet 12
– 20 – 60679-3 © IEC:2012
A
C
N
L
K
H
(1)
H H
3 3
M
1 2 3
(2)
5 4
IEC  2474/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A  20,50 3
B ― ― 20,50 3
C ― ― 15,50 CO 41A. 4
C ― ― 20,50 CO 41B. 4
H 15,19 15,24 15,29
H 15,19 15,24 15,29
H 7,20 7,50 7,80
K ― 0,45 ―
L 4,50 ― ― CO 41.1 4
M 7,57 7,62 7,67 2
M 7,57 7,62 7,67 2
N ― ― 0,50
Key
(1) Square corner indicates Pin 1.
(2) If required, insulating standoffs shall be located within corner areas defined in the table by M and M .
1 2
If insulating tape standoffs are used, shaded areas as indicated are preferred and the tape may encircle the leads.
3 This enclosure has same pin layout of CO 15. This enclosure has optionally four insulating standoffs.
4 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The
identity references are given in the table, where a dot indicates the missing information, which is given on another
line.
EXAMPLE CO 41 A1 is the complete identity for enclosure CO 41 with enclosure height C1 and lead length L.

Metal enclosure, five lead crystal oscillator outline –
Scale
2:1
Type CO 41
Sheet 13
B
H
M
60679-3 © IEC:2012 – 21 –
A
C
N
L
K
Actual size
H
(1)
H
120°
(2)
H
B 2
M
IEC  2475/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A ― ― 12,70
B ― ― 12,70
C ― ― 6,08
H ― ― 7,72
H ― ― 7,72
K ― ― 0,45
L ― ― 6,85
M ― 6,00 ― 2
N 0,70 0,80 0,90
Key
(1) Square corner indicates Pin1.
(2) Three standoffs are located along the circle with diameter of M = 6 mm nom. Each standoff is located at a 120°
angle to the others.
Metal enclosure, four lead crystal oscillator outline –
Scale
2:1
Type CO 42
Sheet 14
– 22 – 60679-3 © IEC:2012
A
C
N
L
K
Actual size
H
(1)
M
(2)
1 3
M H B
2 2
5 4
IEC  2476/12
Dimensions (mm)
Identity
Ref. Footnotes
reference
Min. Nom. Max.
A 25,02 25,40 25,78
B 25,02 25,40 25,78
C ― ― 10,00 CO 43 A. 3
C ― ― 11,25 CO 43 B. 3
C ― ― 13,40 CO 43 C. 3
H ― ― 19,05
H ― ― 19,05
K 0,40 ― 0,60
L 4,00 ― ― CO 43.1 3
M ― ― 11,43 2
M ― ― 11,43 2
N 0, 51 0, 64 0,77
Key
(1) Square corner indicates Pin 1.
(2) If required, insulating standoffs shall be located within corner areas defined in the table by M and M .
1 2
If insulating tape standoffs are used, shaded areas as indicated are preferred and the tape may encircle the leads.
3 The complete identity for any oscillator outline is a six digit type number consisting of the basic type number
(four digits) followed by a letter indicating the enclosure height and a number indicating the lead length. The identity
references are given in the table, where a dot indicates the missing information, which is given on another line.
EXAMPLE CO 43 A1 is the complete identity for enclosure CO 43 with enclosure height C and lead length L.
Metal enclosure, five lead crystal oscillator Scale

2:1
outline – Type CO 43
Sheet 15
60679-3 © IEC:2012 – 23 –
Annex A
(normative)
Lead connections of crystal oscillators –
Type CO 02 to CO 43
A.1 Terminal lead connections
Table A.1 below specifies the lead connections for the crystal oscillators given in this standard.
Where the function in column 3 is shown as “NC”, the leads may be connected internally. They
shall not be used as external tie points or connections unless otherwise stated in the detail
specification.
If the presence of any leads is optional, or of an enclosure is supplied with less than the
maximum number of leads, that shall be indicated in the detail specification.
Table A.1 – Lead connections of crystal oscillators –
Type CO 02 to CO 43 (1 of 2)
Crystal oscillators Position Function
outline (lead number)
CO 02 1 to 6 NC
7 Ground
8 Output
9 to 13 NC
14 Vcc
15 to 18 NC: Inclusion of these
leads is not preferred.
CO 05 1 to 2 NC
3 Output
4 Ground
5 Output
6 and 7 NC
8 Vcc
CO 08 1 and 2 Vcc
3 Ground
4 Output
5 Ground
CO 09 1 Ground
2 Vcc
3 and 4 NC
5 Output
CO 15 1 Vcc
2 Output
3 NC
4 Ground
5 NC
CO 16 1 NC
2 Ground
3 Output
4 Vcc
– 24 – 60679-3 © IEC:2012
Table A.1 – Lead connections of crystal oscillators –
Type CO 02 to CO 43 (2 of 2)
Crystal oscillators Position Function
outline (lead number)
CO 19 1 Output
2 Vcc
3 and 4 NC
5 Ground
CO 21 1 To be specified
2 Ground
3 Output
4 Vcc
CO 22 1 Oscillator output
2 Divided output
3 Output control
4 Ground
5 Function leads
6 may be used for the
7 divided frequency
8 Vcc
CO 23 1 and 2 NC
3 Output
4 Ground
5 Output
6 and 7 NC
8 Vcc
CO 24 1 To be specified
2 Ground
3 Output
4 Vcc
CO 40 1 To be specified
2 NC
3 Output
4 Ground
5 Vcc
CO 41 1 Vcc
2 Output
3 Ground
4 To be specified
5 NC
CO 42 1 To be specified
2 Ground
3 Output
4 Vcc
CO 43 1 Output
2 Ground
3 To be specified
4 NC
5 Vcc
60679-3 © IEC:2012 – 25 –
Bibliography
IEC 60679-1:2007, Quartz crystal controlled oscillators of assessed quality – Part 1: Generic
specification
IEC 60679-2:1981, Quartz crystal controlled oscillators – Part 2: Guide to the use of quartz
crystal controlled oscillators
IEC 60679-4:1997, Quartz crystal controlled oscillators of assessed quality – Part 4: Sectional
Specification – Capability approval
IEC 60679-4-1:1998, Quartz crystal controlled oscillators of assessed quality – Part 4-1: Blank
detail specification – Capability approval
IEC 60679-5:1998, Quartz crystal controlled oscillators of assessed quality – Part 5: Sectional
specification – Qualification approval
IEC 60679-5-1:1998, Quartz crystal controlled oscillators of assessed quality – Part 5-1: Blank
detail specification – Qualification approval
ISO 1101, Geometrical Product Specifications (GPS) – Geometrical tolerancing – Tolerances
of form, orientation, location and run-out
_____________
– 26 – 60679-3 © CEI:2012
SOMMAIRE
AVANT-PROPOS . 27
1 Domaine d’application . 29
2 Guide de normalisation des dessins d'encombrement des dispositifs pour la
commande et le choix de la fréquence . 29
3 Dimensions des enveloppes des oscillateurs pilotés par quartz . 31
4 Connexions des sorties . 31
5 Désignation des enveloppes des oscillateurs pilotés par quartz . 31
Annexe A (normative) Connexions des sorties des oscillateurs à quartz – Type CO 02 à
CO 43 . 47
Bibliographie . 49

Figure 1 – Guide pour les dessins d'encombrement . 30

Tableau 1 – Désignation des enveloppes des oscillateurs pilotés par quartz . 31
Tableau A.1 – Connexions des sorties des oscillateurs à quartz – Type CO 02 à CO 43
(1 sur 2) . 47

60679-3 © CEI:2012 – 27 –
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
OSCILLATEURS PILOTÉS PAR QUARTZ
SOUS ASSURANCE DE LA QUALITÉ –

Partie 3: Encombrements normalisés et connexions des sorties

AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes internationales, des
Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des comités d'études, aux
travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent également aux
travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure du
possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de la CEI. La CEI n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou mandataires,
y compris ses experts particuliers et les membres de ses comités d'études et des Comités nationaux de la CEI,
pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre dommage de quelque
nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais de justice) et les dépenses
découlant de la publication ou de l'utilisation de cette Publication de la CEI ou de toute autre Publication de la CEI,
ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de la CEI peuvent faire l’objet
de droits de brevet. La CEI ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits de
brevets et de ne pas avoir signalé leur existence.
La Norme internationale CEI 60679-3 a été établie par le comité d'études 49 de la CEI:
Dispositifs piézoélectriques, diélectriques et électrostatiques et matériaux associés pour la
détection, le choix et la commande de la fréquence.
Cette troisième édition annule et remplace la deuxième édition parue en 2001. Cette édition
constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition
précédente:
• CO 01, CO 07, CO 10, CO 17 et CO 18 ont été supprimés;
• La disposition actuelle des broches de CO 06 a été supprimée. Une nouvelle disposition des
broches de CO 06 a été ajoutée sous le nom CO 40;

– 28 – 60679-3 © CEI:2012
• Une nouvelle disposition de CO 15 a été ajoutée sous le nom CO 41;
• Deux nouveaux boîtiers, CO 42 et CO 43, ont été ajoutés.
L'édition révisée inclut donc les 15 types de boîtiers présentés dans le Tableau 1 de l’Article 5.
Le texte de cette norme est issu des documents suivants:
FDIS Rapport de vote
49/1009/FDIS 49/1021/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette norme.
Cette publication a été rédigée selon les Directives ISO/CEI, Partie 2.
Une liste de toutes les parties de la série CEI 60679, publiées sous le titre général Oscillateurs
pilotés par quartz sous assurance de la qualité, peut être consultée sur le site web de la CEI.
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant la date de
stabilité indiquée sur le site web de la CEI sous "http://webstore.iec.ch" dans les données
relatives à la publication recherchée. À cette date, la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.
60679-3 © CEI:2012 – 29 –
OSCILLATEURS PILOTÉS PAR QUARTZ
SOUS ASSURANCE DE LA QUALITÉ –

Partie 3: Encombrements normalisés et connexions des sorties

1 Domaine d’application
La présente partie de la CEI 60679 spécifie les encombrements normalisés et les connexions
des sorties des oscillateurs à quartz comportant des enveloppes avec sorties.
2 Guide de normalisation des dessins d'encombrement des dispositifs pour la
commande et le choix de la fréquence
Afin d'assurer une présentation uniforme des dessins d'encombrement des dispositifs pour la
commande et le choix de la fréqu
...