SIST EN IEC 63138-3:2022

Multi-channel radio frequency connectors - Part 3: Sectional specification for MQ5 series circular connectors (IEC 63138-3:2022)

This part of IEC 63138, which is a sectional specification (SS), provides information and rules for the preparation of detail specifications (DS) for MQ5 series circular connectors with five RF channels, as well as a detailed specification of the blank format.
An MQ5 series circular connector with 50 Ω nominal impedance has five RF channels that can be engaged and disengaged at the same time. There are two versions of plug connectors, one is a quick-lock version, and the other is a threaded version. The socket connector provides two coupling mechanisms, a quick-lock and a threaded coupling.
MQ5 series circular connectors can be used in mobile communication systems and in other communication equipment.
This document also specifies the mating face dimensions and gauging information of MQ5 series circular connectors, and tests selected from IEC 63138-1, applicable to all detail specifications relating to MQ5 series circular connectors.

Mehrkanalige Hochfrequenz-Steckverbinder - Teil 3: Rahmenspezifikation für Rundsteckverbinder der Serie MQ5 (IEC 63138-3:2022)

Connecteurs radiofréquences multicanaux - Partie 3: Spécification intermédiaire relatives aux connecteurs circulaires de série MQ5 (IEC 63138-3:2022)

IEC 63138-3:2022, qui est une spécification intermédiaire (SS), fournit des informations et des règles pour l’établissement de spécifications particulières (DS) relatives aux connecteurs circulaires de série MQ5 disposant de cinq canaux RF, ainsi qu’une spécification particulière-cadre.Le présent document spécifie également les dimensions de l’interface d’accouplement et les informations sur les calibres de contrôle de la série MQ5, ainsi que les essais choisis dans l’IEC 63138-1, applicables à toutes les spécifications particulières relatives aux connecteurs circulaires de série MQ5.

Večkanalni radiofrekvenčni konektorji - 3. del: Področna specifikacija za okrogli konektor serije MQ5 (IEC 63138-3:2022)

Ta del standarda IEC 63138, ki je področna specifikacija (SS), podaja informacije in določa pravila za pripravo podrobnih specifikacij (DS) za okrogle konektorje serije MQ5 s petimi radiofrekvenčnimi kanali, pa tudi s podrobno specifikacijo praznega formata.
Okrogli konektor serije MQ5 z nazivno impedanco 50 Ω ima pet radiofrekvenčnih kanalov, ki jih je mogoče vklopiti in izklopiti hkrati. Obstajata dve različici vtičnih konektorjev, ena je različica s hitrim zaklepanjem in druga z navojem. Vtični konektor vključuje spojna mehanizma, hiter zaklep in spojko z navojem.
Okrogli konektorji serije MQ5 se lahko uporabljajo v mobilnih komunikacijskih sistemih in v drugi komunikacijski opremi.
Ta dokument določa tudi mere spojne površine in informacije o merjenju krožnih konektorjev serije MQ5 ter preskuse, izbrane iz standarda IEC 63138-1, ki veljajo za vse podrobne specifikacije v zvezi z okroglimi konektorji serije MQ5.

General Information

• Status: Published
• Publication Date: 18-May-2022
• ICS: 33.120.30 - RF connectors
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-May-2022
• Due Date: 08-Jul-2022
• Completion Date: 19-May-2022
• Ref Project: EN IEC 63138-3:2022 - Multi-channel radio frequency connectors - Part 3: Sectional specification for MQ5 series circular connectors

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 63138-3:2022
01-junij-2022
Večkanalni radiofrekvenčni konektorji - 3. del: Področna specifikacija za okrogli
konektor serije MQ5 (IEC 63138-3:2022)
Multi-channel radio frequency connectors - Part 3: Sectional specification for MQ5 series
circular connectors (IEC 63138-3:2022)
Mehrkanalige Hochfrequenz-Steckverbinder - Teil 3: Rahmenspezifikation für
Rundsteckverbinder der Serie MQ5 (IEC 63138-3:2022)
Connecteurs radiofréquences multicanaux - Partie 3: Spécification intermédiaire relatives
aux connecteurs circulaires de série MQ5 (IEC 63138-3:2022)
Ta slovenski standard je istoveten z: EN IEC 63138-3:2022
ICS:
33.120.30 Radiofrekvenčni konektorji RF connectors
(RF)
SIST EN IEC 63138-3:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 63138-3:2022

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SIST EN IEC 63138-3:2022


EUROPEAN STANDARD EN IEC 63138-3

NORME EUROPÉENNE

EUROPÄISCHE NORM April 2022
ICS 33.120.30

English Version
Multi-channel radio frequency connectors - Part 3: Sectional
specification for MQ5 series circular connectors
(IEC 63138-3:2022)
Connecteurs radiofréquences multicanaux - Partie 3: Mehrkanalige Hochfrequenz-Steckverbinder - Teil 3:
Spécification intermédiaire relatives aux connecteurs Rahmenspezifikation für Rundsteckverbinder der Serie
circulaires de série MQ5 MQ5
(IEC 63138-3:2022) (IEC 63138-3:2022)
This European Standard was approved by CENELEC on 2022-04-13. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 63138-3:2022 E

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SIST EN IEC 63138-3:2022
EN IEC 63138-3:2022 (E)
European foreword
The text of document 46F/602/FDIS, future edition 1 of IEC 63138-3, prepared by SC 46F "RF and
microwave passive components" of IEC/TC 46 "Cables, wires, waveguides, RF connectors, RF and
microwave passive components and accessories" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN IEC 63138-3:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-01-13
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-04-13
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63138-3:2022 was approved by CENELEC as a European
Standard without any modification.
2

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SIST EN IEC 63138-3:2022
EN IEC 63138-3:2022 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 63138-1 2019 Multi-channel radio frequency connectors - EN IEC 63138-1 2019
Part 1: Generic specification - General
requirements and test methods

3

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SIST EN IEC 63138-3:2022



IEC 63138-3

®


Edition 1.0 2022-03




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE










Multi-channel radio frequency connectors –

Part 3: Sectional specification for MQ5 series circular connectors



Connecteurs radiofréquences multicanaux –

Partie 3: Spécification intermédiaire relatives aux connecteurs circulaires de

série MQ5















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.120.30 ISBN 978-2-8322-1083-6




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC 63138-3:2022
– 2 – IEC 63138-3:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Mating face and gauge information . 6
4.1 Mating face dimensions . 6
4.1.1 MQ5 socket connector . 6
4.1.2 MQ5 plug connector . 8
4.1.3 Mating face of RF channel . 11
4.2 Gauges . 12
4.2.1 Gauge for RF channel. 12
4.2.2 Gauge rings for plug outer contact . 13
4.2.3 Gauge for MQ5 socket connector . 14
4.2.4 Gauge for MQ5 plug connector . 15
5 Quality assessment procedure . 17
5.1 General . 17
5.2 Rating and characteristics . 17
5.3 Quality assessment . 19
5.3.1 General . 19
5.3.2 Inspection procedure . 20
5.3.3 Lot-by-lot inspection . 21
5.3.4 Periodic inspections . 22
6 Instructions for preparation of detail specifications . 23
6.1 General . 23
6.2 Identification of the component . 23
6.3 Performance . 23
6.4 Marking, ordering information and related matters . 23
6.5 Selection of tests, test conditions and severities . 23
6.6 Blank detail specification pro-forma for MQ5 series circular connector . 24
7 Marking . 28
7.1 Marking of component . 28
7.2 Marking and contents of package . 28

Figure 1 – MQ5 socket connector . 7
Figure 2 – MQ5 quick lock plug connector . 9
Figure 3 – MQ5 threaded plug connector . 10
Figure 4 – Mating face of RF channel . 11
Figure 5 – Gauge for socket contact of RF channel . 13
Figure 6 – Gauge for plug outer contact . 14
Figure 7 – Gauge for MQ5 socket connector . 15
Figure 8 – Gauge for MQ5 plug connector . 16

Table 1 – Dimensions of MQ5 socket connector . 8
Table 2 – Dimensions of MQ5 quick lock plug connector . 9
Table 3 – Dimensions of MQ5 threaded plug connector . 10

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IEC 63138-3:2022 © IEC 2022 – 3 –
Table 4 – Dimensions of RF channel . 12
Table 5 – Dimensions of gauge for socket contact . 13
Table 6 – Dimensions of gauge for outer contact . 14
Table 7 – Dimensions of gauge for MQ5 socket connector . 15
Table 8 – Dimensions of gauge for MQ5 plug connector . 17
Table 9 – Rating and characteristics . 18
Table 10 – Qualification inspection . 20
Table 11 – Lot-by-lot inspection . 21
Table 12 – Sampling plans for mechanical compatibility and return loss inspection . 21
Table 13 – Periodic inspection . 22

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

MULTI-CHANNEL RADIO FREQUENCY CONNECTORS –

Part 3: Sectional specification for MQ5 series circular connectors

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.
IEC 63138-3 has been prepared by subcommittee 46F: RF and microwave passive components,
of IEC technical committee 46: Cables, wires, waveguides, RF connectors, RF and microwave
passive components and accessories. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
46F/602/FDIS 46F/614/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

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SIST EN IEC 63138-3:2022
IEC 63138-3:2022 © IEC 2022 – 5 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 63138 series, published under the general title Multi-channel radio
frequency connectors, 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 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.

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MULTI-CHANNEL RADIO FREQUENCY CONNECTORS –

Part 3: Sectional specification for MQ5 series circular connectors



1 Scope
This part of IEC 63138, which is a sectional specification (SS), provides information and rules
for the preparation of detail specifications (DS) for MQ5 series circular connectors with five RF
channels, as well as a detailed specification of the blank format.
An MQ5 series circular connector with 50 Ω nominal impedance has five RF channels that can
be engaged and disengaged at the same time. There are two versions of plug connectors, one
is a quick-lock version, and the other is a threaded version. The socket connector provides two
coupling mechanisms, a quick-lock and a threaded coupling.
MQ5 series circular connectors can be used in mobile communication systems and in other
communication equipment.
This document also specifies the mating face dimensions and gauging information of MQ5
series circular connectors, and tests selected from IEC 63138-1, applicable to all detail
specifications relating to MQ5 series circular connectors.
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 63138-1:2019, Multi-channel radio-frequency connectors – Part 1:Generic specification −
General requirements and test methods
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 63138-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.elsctropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Mating face and gauge information
4.1 Mating face dimensions
4.1.1 MQ5 socket connector
The mating face of MQ5 socket connectors is shown in Figure 1 and its dimensions are shown
in Table 1.

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IEC 63138-3:2022 © IEC 2022 – 7 –

NOTE 1 Mechanical reference plane.
NOTE 2 Chamfer of the four supplementary grooves is optional.
NOTE 3 Chamfer of the main groove is optional.
NOTE 4 The mating face of RF channel with pin contact is shown in Figure 4a) and its dimensions are shown in
Table 4.
NOTE 5 The shape of seal ring is optional.
NOTE 6 The initial position number of the RF channel with pin contact and the other positions numbered clockwise.
Figure 1 – MQ5 socket connector

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Table 1 – Dimensions of MQ5 socket connector
Dimensions
mm
Ref.
Min. Max.
a 31,75 31,80
b 30,35 30,40
c M30 × 1 tolerance 6 g
d 6,80 7,00
e 26,42 26,48
f 6,00 --
g R3,0 nom.
h 7,95 8,05
i 10,95 11,00
j 1,50 1,80
k 19,30 19,45
n 13,90 14,00
p 3,20 3,35
q 1,65 1,75
r 0,50 0,60
s 7,28 7,32
t 15,48 15,52
u 10,30 10,90

4.1.2 MQ5 plug connector
4.1.2.1 MQ5 quick lock plug connector
The mating face of a MQ5 connector with quick lock type is shown in Figure 2 and its dimensions
are shown in Table 2.

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SIST EN IEC 63138-3:2022
IEC 63138-3:2022 © IEC 2022 – 9 –

NOTE 1 Mechanical reference plane.
NOTE 2 The mating face of RF channel with socket contact is shown in Figure 4b) and its dimensions are shown in
Table 4.
NOTE 3 The shape of four supplementary keys is optional.
NOTE 4 The shape of main key is optional.
NOTE 5 The shape of spring finger is optional.
NOTE 6 The initial position number of the RF channel with socket contact and the other positions numbered anti-
clockwise.
Figure 2 – MQ5 quick lock plug connector
Table 2 – Dimensions of MQ5 quick lock plug connector
Dimensions
Ref. mm
Min. Max.
a -- 42,00
b 31,80 31,90
c 30,05 30,15
d 26,30 26,40
e 8,40 8,60
f 1,20 1,50
g 11,00 11,10
h 6,60 6,80
i 15,48 15,52
j 13,70 13,80
k 7,52 7,58
m 3,00 3,15
n 1,40 1,50

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4.1.2.2 MQ5 threaded plug connector
The mating face of a MQ5 threaded plug connector is shown in Figure 3 and its dimensions are
shown in Table 3.

NOTE 1 Mechanical reference plane.
NOTE 2 The mating face of RF channel with socket contact is shown in Figure 4b) and its dimensions are shown in
Table 4.
NOTE 3 The shape of the four supplementary keys is optional.
NOTE 4 The shape of main keys is optional.
NOTE 5 The initial position number of the RF channel with socket contact and the other positions numbered anti-
clockwise.
Figure 3 – MQ5 threaded plug connector
Table 3 – Dimensions of MQ5 threaded plug connector
Dimensions
Ref. mm
Min. Max.
a 7,52 7,58
b 26,35 26,40
c M30 × 1 tolerance 6 H
d 1,20 1,50
e 5,20 5,60
f 11,20 --
i 7,00 --
j 13,70 13,80
k 15,48 15,52
m 3,00 3,15
n 1,40 1,50
p 32,0 nom

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IEC 63138-3:2022 © IEC 2022 – 11 –
4.1.3 Mating face of RF channel
The mating face of the RF channel with pin contact is shown in Figure 4a), the mating face of
the RF channel with socket contact is shown in Figure 4b), and their dimensions are shown in
Table 4.

a) RF channel with pin contact

b) RF channel with socket contact
NOTE Mechanical reference plane.
Figure 4 – Mating face of RF channel

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Table 4 – Dimensions of RF channel
Dimensions
mm
Ref.
Min. Max.
a 1,17 1,23
b 5,90 5,93
c R1,00 nom
d 0,35 0,65
e 2,60 2,90
f 3,30 3,70
g 0 0,25
h 0,75 1,00
i 1,70 --
j 0 0,25
k 0 0,25
m 3,00 --
a
n -- --
p 1,8 nom
b
-- 6,40
q
r 3,80 --
u 6,60 6,70
v 2,00 2,20
a
-- --
s
a
Slot design optional when mating with a pin with Φ1,17 mm to Φ1,23 mm. It should
meet the mechanical and electrical performance requirements.
b
Expand to meet the requirements with gauge rings for socket outer contact.

4.2 Gauges
4.2.1 Gauge for RF channel
4.2.1.1 Socket centre contact
4.2.1.2 Dimensions of the gauge
The gauge for the socket contact of RF channel is shown in Figure 5 and its dimensions are
shown in Table 5.

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Figure 5 – Gauge for socket contact of RF channel
Table 5 – Dimensions of gauge for socket contact
Gauge C
Gauge A Gauge B
（For retention purpose）
(For sizing purpose) (For insertion purpose)
+2
Ref. Mass of gauge：40 g
0
mm mm mm
Min. Max. Min. Max. Min. Max.
a 1,235 1,240 1,230 1,235 1,165 1,170
b 0,700 1,000 0,900 1,200 0,900 1,200
Material: Polished steel, cylindrical surface roughness of diameter a: Ra≤0,4 μm.

4.2.1.3 Test procedure
Test procedure as follows.
a) Sizing test
Insert gauge A into centre contact three times, the depth of insertion is not less than 0,7 mm;
this is sizing operation.
b) Insertion test
After the sizing operation, insert gauge B into centre contact; the insertion force shall not
exceed 6 N.
c) Retention test
After the sizing or insertion operation, the gauge C shall be inserted into the socket centre
contact. The contact shall retain the mass of the gauge C in a vertical downward position.
4.2.2 Gauge rings for plug outer contact
4.2.2.1 Dimensions of the gauge
The gauge for the outer contact of RF channel is shown in Figure 6 and its dimensions are
shown in Table 6.

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Figure 6 – Gauge for plug outer contact
Table 6 – Dimensions of gauge for outer contact
Gauge C
Gauge A Gauge B
（For retention purpose）
(For sizing purpose) (For insertion purpose)
+2
Ref. Mass of gauge：400 g
0
mm mm mm
Min. Max. Min. Max. Min. Max.
a 5,880 5,885 5,895 5,900 5,930 5,935
b 7,250 7,350 7,250 7,350 7,250 7,350
c 6,700 6,800 6,700 6,800 6,700 6,800
d 2,700 3,000 2,700 3,000 2,700 3,000
v 1,55 1,65 1,55 1,65 1,55 1,65
Material: Polished steel, cylindrical surface roughness of diameter a: Ra≤0,4 μm.

4.2.2.2 Test procedure
Test procedure is a follows.
a) Sizing test
Insert gauge A into the outer contact of RF channel three times, the depth of insertion is not
less than 2,7 mm; this is sizing operation.
b) Insertion test
After the sizing operation, if specified in the detail specification, the force necessary to fully
insert the gauge B into the outer contact shall be measured and it shall not exceed 15 N.
c) Retention test
After the sizing or insertion operation, the gauge C shall be inserted into the outer contact.
The contact shall retain the mass of the gauge C in a vertical downward position.
4.2.3 Gauge for MQ5 socket connector
4.2.3.1 Dimensions of the gauge
The gauge for the MQ5 socket connector is shown in Figure 7 and its dimensions are shown in
Table 7.

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NOTE 1 Mechanical reference plane.
NOTE 2 The shape of the four supplementary keys is optional.
NOTE 3 The shape of the main key is optional.
Figure 7 – Gauge for MQ5 socket connector
Table 7 – Dimensions of gauge for MQ5 socket connector
Dimensions
mm
Ref.
Min. Max.
a 7,52 7,58
b 5,00 --
c 1,20 1,50
d 15,48 15,52
e 26,35 26,40
f 13,70 13,80
m 3,00 3,15
n 1,40 1,50

4.2.3.2 Test procedure
The gauge should be inserted into the MQ5 socket connector three times, and then the insertion
force is measured; the insertion force should not be more than 80 N.
4.2.4 Gauge for MQ5 plug connector
4.2.4.1 Dimensions of the gauge
The gauge for the MQ5 plug connector is shown in Figure 8 and its dimensions are shown in
Table 8.

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NOTE 1 Mechanical and electrical reference plane.
NOTE 2 Chamfer of four supplementary grooves is optional.
NOTE 3 Chamfer of main groove is optional.
Figure 8 – Gauge for MQ5 plug connector

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SIST EN IEC 63138-3:2022
IEC 63138-3:2022 © IEC 2022 – 17 –
Table 8 – Dimensions of gauge for MQ5 plug connector
Dimensions
mm
Ref.
Min. Max.
a -- 7,30
b 5,88 5,90
c 3,70 --
d 10,90 11,00
e 26,42 26,48
f 29,80 30,00
g 10,50 10,60
h 3,30 3,70
j R1,00 nom
p 13,90 14,00
t 15,48 15,52
m 3,20 3,35
n 1,60 1,75
u 6,50 6,70
v 1,55 1,65

4.2.4.2 Test procedure
The gauge should be inserted into the MQ5 plug connector three times, and then the insertion
force is measured; the insertion force should not be more than 80 N.
5 Quality assessment procedure
5.1 General
Subclause 5.2 to Subclause 5.3.4 provide the recommended rating, performance and test
conditions to be considered when preparing a detail specification. They also specify the test
schedules and procedures appropriate to the corresponding quality inspection level.
5.2 Rating and characteristics
The values indicated below are recommended for MQ5 series circular connector, and are given
for the writer of the detail specification. They are applicable for the condition when the
connectors are fully mated. The preferable characteristics can be seen in Table 9.
Certain tests are listed without any recommended values being given when they are not require
...