EN IEC 63138-2:2023

SLOVENSKI STANDARD
01-februar-2024
Večkanalni radiofrekvenčni konektorji - 2. del: Področna specifikacija za okrogle
konektorje skupine MQ4 (IEC 63138-2:2023)
Multi-channel radio-frequency connectors - Part 2: Sectional specification for MQ4 series
circular connectors (IEC 63138-2:2023)
Mehrkanalige Hochfrequenz-Steckverbinder - Teil 2: Rahmenspezifikation für
Rundsteckverbinder der MQ4-Serie (IEC 63138-2:2023)
Connecteurs radiofréquences multicanaux - Partie 2: Spécification intermédiaire pour les
connecteurs circulaires de série MQ4 (IEC 63138-2:2023)
Ta slovenski standard je istoveten z: EN IEC 63138-2:2023
ICS:
33.120.30 Radiofrekvenčni konektorji RF connectors
(RF)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63138-2

NORME EUROPÉENNE
EUROPÄISCHE NORM December 2023
ICS 33.120.30 Supersedes EN IEC 63138-2:2021
English Version
Multi-channel radio-frequency connectors - Part 2: Sectional
specification for MQ4 series circular connectors
(IEC 63138-2:2023)
Connecteurs radiofréquences multicanaux - Partie 2: Mehrkanalige Hochfrequenz-Steckverbinder - Teil 2:
Spécification intermédiaire pour les connecteurs circulaires Rahmenspezifikation für Rundsteckverbinder der MQ4-
de série MQ4 Serie
(IEC 63138-2:2023) (IEC 63138-2:2023)
This European Standard was approved by CENELEC on 2023-11-21. 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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63138-2:2023 E

European foreword
The text of document 46F/644/FDIS, future edition 2 of IEC 63138-2, 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 63138-2:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-08-21
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-11-21
document have to be withdrawn
This document supersedes EN IEC 63138-2:2021 and all of its amendments and corrigenda (if any).
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 63138-2:2023 was approved by CENELEC as a European
Standard without any modification.
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.cencenelec.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
IEC 63138-2 ®
Edition 2.0 2023-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Multi-channel radio-frequency connectors –

Part 2: Sectional specification for MQ4 series circular connectors

Connecteurs radiofréquences multicanaux –

Partie 2: Spécification intermédiaire pour les connecteurs circulaires de

série MQ4
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.120.30  ISBN 978-2-8322-7638-9

– 2 – IEC 63138-2:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Mating face and gauge information . 7
4.1 Mating face dimensions . 7
4.1.1 MQ4 socket connector . 7
4.1.2 MQ4 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 MQ4 socket connector . 14
4.2.4 Gauge for MQ4 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 . 19
5.3.3 Lot-by-lot inspection . 20
5.3.4 Periodic inspections . 21
6 Instructions for preparation of detail specifications . 23
6.1 General . 23
6.2 Identification of the detail specification . 23
6.3 Identification of the component . 23
6.4 Performance . 23
6.5 Marking, ordering information and related matters . 24
6.6 Selection of tests, test conditions and severities . 24
6.7 Blank detail specification pro forma for MQ4 series circular connectors . 24
7 Marking . 29
7.1 Marking of components . 29
7.2 Marking and contents of package . 29

Figure 1 – MQ4 socket connector . 7
Figure 2 – MQ4 quick-lock plug connector . 9
Figure 3 – MQ4 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 MQ4 socket connector . 15
Figure 8 – Gauge for MQ4 plug connector . 16

Table 1 – Dimensions of MQ4 socket connector . 8
Table 2 – Dimensions of MQ4 quick-lock plug connector . 9

IEC 63138-2:2023 © IEC 2023 – 3 –
Table 3 – Dimensions of MQ4 threaded plug connector . 10
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 MQ4 socket connector . 15
Table 8 – Dimensions of gauge for MQ4 plug connector . 16
Table 9 – Rating and characteristics . 17
Table 10 – Qualification inspection . 19
Table 11 – Lot-by-lot inspection . 21
Table 12 – Sampling plans for mechanical compatibility and return loss inspection . 21
Table 13 – Periodic inspection . 22

– 4 – IEC 63138-2:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MULTI-CHANNEL RADIO-FREQUENCY CONNECTORS –

Part 2: Sectional specification for MQ4 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 Pu
...