EN IEC 61169-74:2025

Radio-frequency connectors - Part 74: Sectional specification for HN series RF coaxial connectors with screw coupling - Characteristic impedance 50 Ω

IEC 61169-74:2025, which is a Sectional Specification (SS), provides information and rules for the preparation of Detail Specifications (DS) for series HN RF coaxial connectors with screw coupling with a characteristic impedance of 50 Ω. This document prescribes mating face dimensions for high performance connectors (grade 2), dimensional details of standard test connectors (grade 0), gauging information and tests selected from IEC 61169-1, applicable to all Detail Specifications relating to series HN RF connectors. This document indicates recommended performance characteristics which are considered when writing a Detail Specification and it covers test schedules and inspection requirements for assessment levels M and H. The series HN connectors are intended to be used in microwave transmission systems and can be connected with all kinds of RF cables and microstrips. The operating frequency is up to 6 GHz.

Hochfrequenz-Steckverbinder - Teil 74: Rahmenspezifikation für koaxiale HF-Steckverbinder der Serie HN mit Schraubkupplung - Wellenwiderstand 50 Ohm

Connecteurs pour fréquences radioélectriques - Partie 74: Spécification intermédiaire pour connecteurs RF coaxiaux de série HN avec couplage à vis - Impédance caractéristique 50 Ω

L'IEC 61169-74:2025, qui est une spécification intermédiaire (SS, Sectional Specification), fournit des informations et des règles pour l'élaboration des spécifications particulières (DS, Detail Specification) relatives aux connecteurs RF coaxiaux de la série HN, à couplage à vis et ayant une impédance caractéristique de 50 Ω. Le présent document décrit les dimensions des faces d'accouplement pour les connecteurs à usage général (grade 2), les détails dimensionnels des connecteurs d'essai normalisés (grade 0), les informations relatives aux calibres et les essais choisis à partir de l'IEC 61169-1, applicables à toutes les spécifications particulières relatives aux connecteurs RF de série HN. Le présent document indique les caractéristiques de performance recommandées prises en considération pour la rédaction d'une spécification particulière et elle couvre les programmes d'essai et les exigences de contrôle pour les niveaux d'assurance M et H. Les connecteurs de série HN sont destinés à être utilisés dans les systèmes de transmission à hyperfréquences et peuvent être connectés à tous types de câbles RF et de microrubans. La fréquence de fonctionnement s'étend jusqu'à 6 GHz.

Radiofrekvenčni konektorji - 74. del: Področna specifikacija za koaksialne konektorje RF serije HN z navojnim spajanjem - Karakteristična impedanca 50 ohm (IEC 61169-74:2025)

General Information

• Status: Published
• Publication Date: 11-Dec-2025
• ICS: 33.120.30 - RF connectors
• Technical Committee: CLC/SR 46F - RF and microwave passive components
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 12-Dec-2025
• Due Date: 30-Jun-2026
• Completion Date: 12-Dec-2025
• Ref Project: SIST EN IEC 61169-74:2026 - Radio-frequency connectors - Part 74: Sectional specification for HN series RF coaxial connectors with screw coupling - Characteristic impedance 50 Ω (IEC 61169-74:2025)

Overview

EN IEC 61169-74:2025 is a sectional specification for HN series RF coaxial connectors with screw coupling and characteristic impedance 50 Ω. Published by CLC and aligned with IEC 61169-74:2025, this document provides rules and templates for preparing Detail Specifications (DS) for HN connectors. It defines mating‑face dimensions for high performance connectors (grade 2), dimensional data for standard test connectors (grade 0), gauging information, and selected tests and inspection requirements - supporting connector use in microwave transmission systems up to 6 GHz.

Key topics and requirements

• Detail Specification guidance: Instructions for preparing vendor- or product‑level Detail Specifications based on the sectional rules.
• Mating face dimensions: Prescribed interfaces for grade 2 (high performance) connectors to ensure interchangeability and reliable mating.
• Standard test connectors: Dimensional details for grade 0 test connectors used during qualification and measurement.
• Gauging information: Gauge designs and acceptance criteria for centre and outer contacts to support mechanical conformance checks.
• Test selection and schedules: Tests and inspection requirements drawn from IEC 61169-1, covering acceptance and periodic testing and quality assessment for assessment levels M and H.
• Recommended performance characteristics: Parameters considered during DS development (electrical, mechanical and environmental ratings).
• Operating range: Intended for RF systems operating up to 6 GHz; suitable for connection to RF cables and microstrips.

Applications and who uses it

EN IEC 61169-74:2025 is intended for:

• Connector manufacturers preparing Detail Specifications and production test plans for HN series connectors.
• Product designers and system engineers in telecommunications, broadcast, aerospace, military and microwave test equipment specifying reliable 50 Ω interfaces.
• Test laboratories and QA teams performing dimensional gauging, electrical and environmental testing to defined acceptance and periodic schedules.
• Procurement and compliance officers requiring standardized interface and performance requirements for supplier contracts.

Typical applications include microwave transmission links, RF test benches, cable assemblies and microstrip interconnects where a screw‑coupled 50 Ω HN connector is specified.

Related standards

• IEC 61169-1 - Generic specification: general requirements and measuring methods (referenced for test methods).
• IEC 62037-3 - Measurement of passive intermodulation in coaxial connectors.
• IEC 62153-4-7 - EMC test method for transfer impedance and screening attenuation of connectors.

EN IEC 61169-74:2025 ensures mechanical interchangeability, consistent test methods and clear guidance for quality assessment of HN series RF coaxial connectors, helping manufacturers and users achieve reliable RF interconnections up to 6 GHz.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2026
Radiofrekvenčni konektorji - 74. del: Področna specifikacija za koaksialne
konektorje RF serije HN z navojnim spajanjem - Karakteristična impedanca 50 ohm
(IEC 61169-74:2025)
Radio-frequency connectors - Part 74: Sectional specification for HN series RF coaxial
connectors with screw coupling - Characteristic impedance 50 Ω (IEC 61169-74:2025)
Hochfrequenz-Steckverbinder – Teil 74: Rahmenspezifikation für koaxiale HF-
Steckverbinder der Serie HN mit Schraubkupplung – Wellenwiderstand 50 Ohm (IEC
61169-74:2025)
Connecteurs pour fréquences radioélectriques - Partie 74: Spécification intermédiaire
pour connecteurs RF coaxiaux de la série hn avec couplage à vis - Impédance
caractéristique 50 ohms (IEC 61169-74:2025)
Ta slovenski standard je istoveten z: EN IEC 61169-74:2025
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 61169-74

NORME EUROPÉENNE
EUROPÄISCHE NORM December 2025
ICS 33.120.30
English Version
Radio-frequency connectors - Part 74: Sectional specification for
HN series RF coaxial connectors with screw coupling -
Characteristic impedance 50 Ω
(IEC 61169-74:2025)
Connecteurs pour fréquences radioélectriques - Partie 74: Hochfrequenz-Steckverbinder - Teil 74:
Spécification intermédiaire pour connecteurs RF coaxiaux Rahmenspezifikation für koaxiale HF-Steckverbinder der
de série HN avec couplage à vis - Impédance Serie HN mit Schraubkupplung - Wellenwiderstand 50 Ohm
caractéristique 50 Ω (IEC 61169-74:2025)
(IEC 61169-74:2025)
This European Standard was approved by CENELEC on 2025-12-11. 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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61169-74:2025 E

European foreword
The text of document 46F/703/CDV, future edition 1 of IEC 61169-74, 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 61169-74:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-12-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-12-31
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 61169-74:2025 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 61169-1 2013 Radio frequency connectors - Part 1: EN 61169-1 2013
Generic specification - General
requirements and measuring methods
IEC 62037-3 - Passive RF and microwave devices, EN IEC 62037-3 -
intermodulation level measurement - Part
3: Measurement of passive intermodulation
in coaxial connectors
IEC 62153-4-7 - Metallic cables and other passive EN IEC 62153-4-7 -
components test methods - Part 4-7:
Electromagnetic compatibility (EMC) -Test
method for measuring of transfer
impedance Z and screening attenuation
T
aS or coupling attenuation aC of connectors
and assemblies - Triaxial tube in tube
method
IEC 61169-74 ®
Edition 1.0 2025-11
INTERNATIONAL
STANDARD
Radio-frequency connectors -
Part 74: Sectional specification for HN series RF coaxial connectors with screw
coupling - Characteristic impedance 50 Ω
ICS 33.120.30  ISBN 978-2-8327-0830-9

IEC 61169-74:2025-11(en)
IEC 61169-74:2025 © IEC:2025
CONTENTS
FOREWORD. 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Mating face and gauge information. 6
4.1 General connectors – Grade 2 . 6
4.1.1 Connector with pin centre contact . 6
4.1.2 Connector with socket centre contact . 7
4.2 Gauges . 9
4.2.1 Gauge pin for connector with socket centre contact . 9
4.2.2 Gauge for outer contact of connector with pin centre contact . 10
4.3 Dimensions – Standard test connectors – Grade 0 . 11
4.3.1 Connectors with pin centre contact . 11
4.3.2 Connector with socket centre contact . 12
5 Quality assessment procedures . 14
5.1 General . 14
5.2 Ratings and characteristics . 14
5.3 Test schedule and inspection requirements . 17
5.3.1 Acceptance tests. 17
5.3.2 Periodic tests . 18
5.3.3 Procedures for the quality conformance . 19
6 Instructions for preparation of Detail Specifications . 20
6.1 General . 20
6.2 Identification of the component . 20
6.3 Performance . 20
6.4 Marking, ordering information and related matters . 20
6.5 Selection of tests, test conditions and severities . 20
6.6 Blank Detail Specification pro forma for HN connectors . 21

Figure 1 – Connector with pin centre contact . 6
Figure 2 – Connector with socket centre contact . 8
Figure 3 – Gauge pin for socket centre contact . 9
Figure 4 – Gauge for outer contact of connector with pin centre contact . 10
Figure 5 – Connector with pin centre contact . 11
Figure 6 – Connector with socket in centre contact . 13

Table 1 – Dimensions of connector with pin centre contact . 7
Table 2 – Dimensions of connector with socket centre contact . 8
Table 3 – Dimensions of gauge pin for connector with socket centre contact . 9
Table 4 – Dimensions of gauge for outer contact of connector with pin centre contact . 10
Table 5 – Dimensions of connector with pin centre contact . 12
Table 6 – Dimensions of connector with socket centre contact . 13

IEC 61169-74:2025 © IEC:2025
Table 7 – Preferred climatic categories . 14
Table 8 – Ratings and characteristics . 14
Table 9 – Acceptance tests . 17
Table 10 – Periodic tests . 18

IEC 61169-74:2025 © IEC:2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Radio-frequency connectors -
Part 74: Sectional specification for HN series RF coaxial connectors with
screw coupling - Characteristic impedance 50 Ω

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 61169-74 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/703/CDV 46F/719/RVC
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.
IEC 61169-74:2025 © IEC:2025
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/publications.
A list of all parts in the IEC 61169 series, published under the general title 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, or
– revised.
IEC 61169-74:2025 © IEC:2025
1 Scope
This part of IEC 61169, which is a Sectional Specification (SS), provides information and rules
for the preparation of Detail Specifications (DS) for series HN RF coaxial connectors with screw
coupling with a characteristic impedance of 50 Ω.
This document prescribes mating face dimensions for high performance connectors (grade 2),
dimensional details of standard test connectors (grade 0), gauging information and tests
selected from IEC 61169-1, applicable to all Detail Specifications relating to series HN RF
connectors.
This document indicates recommended performance characteristics which are considered when
writing a Detail Specification and it covers test schedules and inspection requirements for
assessment levels M and H.
The series HN connectors are intended to be used in microwave transmission systems and can
be connected with all kinds of RF cables and microstrips. The operating frequency is up to
6 GHz.
NOTE Metric dimension are original dimensions. All undimensioned pictorial configurations are for reference
purpose only.
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 61169-1:2013, Radio frequency connectors - Part 1: Generic specification - General
requirements and measuring methods
IEC 62037-3, Passive RF and microwave devices, intermodulation level measurement - Part 3:
Measurement of passive intermodulation in coaxial connectors
IEC 62153-4-7, Metallic cables and other passive components test methods - Part 4-7:
Electromagnetic compatibility (EMC) - Test method for measuring of transfer impedance Z and
T
screening attenuation a or coupling attenuation a of connectors and assemblies - Triaxial tube
s c
in tube method
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
IEC 61169-74:2025 © IEC:2025
4 Mating face and gauge information
4.1 General connectors – Grade 2
4.1.1 Connector with pin centre contact
The mating face of the connector with pin centre contact is shown in Figure 1 and its dimensions
are shown in Table 1.
a) Connector with slotted outer conductor b) Connector with unslotted outer conductor
Key
1 mechanical and electrical reference plane
2 sealing ring
3 slot
NOTE 1 The slot is optional. The conductor is slotted and flared to meet gauge requirements of 4.2.2.
NOTE 2 For dimensions, see Table 1.
Figure 1 – Connector with pin centre contact
IEC 61169-74:2025 © IEC:2025
Table 1 – Dimensions of connector with pin centre contact
mm in
Ref. Remarks
Min. Max. Min. Max.
a
— 3,35 — 0,132
a
a
10,8 nom 0,425 nom
b
c 13,80 13,90 0,543 0,547
d 7,34 — 0,289 —
e 6,68 — 0,263 —
f 1,57 1,68 0,062 0,066
g
19,30 — 0,760 —
b
13,34 — 0,525 —
h
i 9,35 — 0,368 —
j 9,04 9,86 0,356 0,388
k 0,13 — 0,005 —
c
10,24 — 0,403 —
l
d
— 1,47 — 0,058
m
n 2,54 — 0,100 —
p 3,51 — 0,138 —
q 3,05 — 0,120 —
s — 0,38 — 0,015
t — 23,50 — 0,925
a
Dimension b depends on the dimension a and dielectric constant, and it shall meet the requirement of
50 Ω ± 1,5 Ω characteristics.
b
Dimension h shall meet the requirement of electrical and sealing performance requirements.
c
Full thread.
d
Coupling nut in forward position.

4.1.2 Connector with socket centre contact
The mating face of the connector with socket centre contact is shown in Figure 2 and its
dimensions are shown in Table 2.
IEC 61169-74:2025 © IEC:2025
Key
1 mechanical and electrical reference plane
NOTE For dimensions, see Table 2.
Figure 2 – Connector with socket centre contact
Table 2 – Dimensions of connector with socket centre contact
mm in
Ref. Remarks
Min. Max. Min. Max.
a
— 3,35 — 0,132
a
a
10,8 nom 0,425 nom
b
c 13,92 14,05 0,548 0,553
d — 7,47 — 0,294
e — 6,81 — 0,268
b
— — — —
f
g — 19,18 — 0,755
h 13,11 13,26 0,516 0,522
i — 9,35 — 0,368
j 8,33 9,09 0,328 0,358
k — 0,13 — 0,005
c
9,12 — 0,359 —
l
m 12,45 — 0,490 —
d
14,99 — 0,590 —
n
p 9,02 — 0,355 —
IEC 61169-74:2025 © IEC:2025
mm in
Ref. Remarks
Min. Max. Min. Max.
q 1,96 2,21 0,077 0,087
s 14,50 14,68 0,571 0,578
t 16,81 17,35 0,662 0,683
a
Dimension b depends on the dimension a and dielectric constant, and shall meet the requirement of
50 Ω ± 1,5 Ω characteristics.
b
Design of slotting is optional. It is chosen to meet return loss (RL), mating characteristics, and connector
durability requirements, when mated with a 1,60 mm to 1,68 mm (0,063 in to 0,066 in) gauge pin.
c
Full thread.
d
Clearance for mating connector coupling nut.

4.2 Gauges
4.2.1 Gauge pin for connector with socket centre contact
The gauge pin for the socket centre contact is shown in Figure 3 and its dimensions are shown
in Table 3.
NOTE For dimensions, see Table 3.
Figure 3 – Gauge pin for socket centre contact
Table 3 – Dimensions of gauge pin for connector with socket centre contact
Gauge A Gauge B Gauge C
(for sizing purpose) (for insertion purpose) (for retention purpose)
mm in mm in mm in
Ref.
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
b 1,685 1,690 0,066 3 0,066 5 1,600 1,605 0,063 0 0,063 2 1,565 1,570 0,061 6 0,061 8
c — 0,25 — 0,01 — 0,25 — 0,01 — 0,25 — 0,01
d
3,18 — 0,125 — 3,18 — 0,125 — 3,18 — 0,125 —
e — 9,86 — 0,388 — 9,86 — 0,388 — 9,86 — 0,388
α 38°± 2° 38°± 2° 38°± 10°
Material: steel, polished.
IEC 61169-74:2025 © IEC:2025
The test procedure is as follows.
a) Sizing test
The gauge A shall be inserted into the socket-centre contact three times. This is a sizing
operation and should only be carried out when the socket-centre contact is removed from
the connector.
b) Insertion test
After sizing test, the standard gauge B should be inserted into the socket-centre contact.
The insertion depth should not be less than 6,35 mm and the insertion force should not be
more than 4,4 N.
c) Retention test
After sizing test, the gauge C shall be inserted into socket-centre contact. The contact shall
retain the mass of the gauge C in a vertical downward position. The insertion depth should
not be less than 6,35 mm and the separation force shall not be less than 0,56 N.
4.2.2 Gauge for outer contact of connector with pin centre contact
The gauge for the outer contact of connector with pin centre contact is shown in Figure 4 and
its dimensions are shown in Table 4.

NOTE For dimensions, see Table 4.
Figure 4 – Gauge for outer contact of
...