Abstract

IEC 61169-1-3:2026 is applicable to built-in devices (hereinafter referred to as "SPD" - surge protective device) or surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient over voltages.
An SPD is intended to protect the electrical apparatus from transient over voltages and to divert surge currents.
The SPD built in the coaxial connector can be a gas discharge tube type, a ¼ wavelength short stub type, a flash-off gap type, and a hybrid type thereof.
The purpose of these built-in SPD is to protect modern electronic equipment connected to telecommunications and signalling networks with nominal system voltages up to 1 000 V (RMS) AC and 1 500 V DC.

Status
Published
Public Enquiry End Date
31-Jul-2025
Publication Date
21-Jul-2026
Technical Committee
MOC - Mobile Communications
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Jul-2026
Due Date
11-Sep-2026
Completion Date
22-Jul-2026

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SIST EN IEC 61169-1-3:2026 - BARVE

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SIST EN IEC 61169-1-3:2026 is the Slovenian standard published by SIST for radio-frequency connectors with built-in surge protective devices (SPDs). It is identical to EN IEC 61169-1-3:2026 and IEC 61169-1-3:2026, and it specifies performance requirements and test methods for SPDs built into coaxial connectors used on telecommunications and signalling networks. The document is meant for manufacturers, test laboratories, and specifiers who need to verify surge withstand, sparkover, return loss, insertion loss, and insulation resistance.

What does SIST EN IEC 61169-1-3:2026 specify?

SIST EN IEC 61169-1-3:2026 applies to built-in SPDs and to surge protection for telecommunications and signalling networks exposed to indirect and direct lightning effects or other transient overvoltages. It covers SPD types built into coaxial connectors, including gas discharge tube type, ¼ wavelength short stub type, flash-off gap type, and hybrid types.

The stated purpose is to protect modern electronic equipment connected to these networks, for nominal system voltages up to 1 000 V (RMS) AC and 1 500 V DC. In practice, that means the standard is aimed at the surge protection device itself, not at the wider cabling system.

The document is organized into these main parts:

Clause or annexWhat it covers
Clause 1Scope
Clause 2Normative references
Clause 3Terms and definitions
Clause 4Service and test conditions
Clause 5Electrical requirements
Clause 6Test and measurement procedures and circuits
Clause 7Details to be specified
Annex AExample equipment and procedure for DC sparkover voltage testing
Annex BExample equipment and procedure for impulse sparkover voltage testing
Annex CExample equipment and layout for impulse durability testing
Annex ZAEuropean publications corresponding to the normative references

What are the key requirements of SIST EN IEC 61169-1-3:2026?

SIST EN IEC 61169-1-3:2026 sets minimum electrical requirements and gives the test methods used to check them. A key practical point is that many limits are defined in the relevant detail specification, so the user has to state the intended acceptance criteria before testing begins.

Service and test conditions

Clause 4 defines the service conditions and the test environment. The standard groups service conditions into normal, extended, and storage ranges for air pressure, temperature, and humidity, and it notes that abnormal service conditions may require special attention from the manufacturer.

Clause 4.2 also links the test environment to the technology used in the SPD. If a device technology is known to be insensitive to temperature for a given characteristic, testing may be done under controlled room conditions; otherwise, testing is done at the extreme temperatures relevant to the intended application. In practice, this means the test plan has to match the installation environment, not just a convenient laboratory condition.

Test setup and sample handling

Clause 4.3 requires the SPD to be tested with the same connections or terminations used in field installation. If the SPD is intended to be used with a base or connector, that base or connector is part of the test, and measurements are made as close as possible to the SPD terminals.

Clause 4.3 also says oscilloscopes used for measurements shall comply with IEC 61083-1, and sample size and permissible failure rates are to be agreed between customer and manufacturer. That matters because the standard expects realistic installation hardware and an agreed acceptance plan, not just a bench-top sample.

Electrical performance before and after surge stress

Clause 5 states that all electrical requirements are minimum requirements. Clause 5.2 covers the initial values for sparkover voltage, return loss (VSWR), insertion loss, and insulation resistance. Sparkover voltage between connector terminals follows the limits in IEC 61643-311, while the other values are taken from the relevant detail specification.

Clause 5.3 requires the connector to be subjected to a surge of specified peak current for a specified number of times, after which the current-limiting element must still meet the detail specification. Clause 5.4 then checks the device after load, so discharge inception voltage, return loss (VSWR), insertion loss, and insulation resistance still stay within the specified ranges. In practice, the SPD has to work both before and after surge exposure.

Test methods and circuits

Clause 6 gives the measurement methods. Clause 6.1 defines the DC sparkover voltage test for connectors with gas discharge tubes, and Clause 6.2 defines the impulse sparkover voltage test. Both use the test circuits shown in Figures 3 and 4 and refer to IEC 61643-311 for details.

Clause 6.3 defines the impulse durability test and refers to IEC 61643-21:2025 for further detail. Annex C supports this part by showing impulse durability categories C2 and D1 for signal and communication SPDs, together with the direct lightning impulse generator and connector layouts. Clauses 6.4 to 6.6 then point the reader to the companion methods for return loss, insertion loss, and insulation resistance.

Clause 7 requires the relevant specification to state the measurement range of sparkover voltage, the impulse durability levels, any test fixture requirement, and any deviation from the methods in this document. That is the clause that turns the generic standard into a product-specific specification.

What terms does SIST EN IEC 61169-1-3:2026 define?

  • Surge protective device (SPD) - A device that limits voltage at a designated port so connected equipment is protected when a surge-induced overvoltage exceeds a preset level.
  • Voltage switching type SPD - An SPD that stays at high impedance until the surge threshold is exceeded, then drops sharply to a low-impedance state.
  • Gas discharge tube (GDT) - A voltage-switching component used in some coaxial adapter SPDs to provide surge protection.
  • ¼ wavelength short stub - A coaxial component whose short stub length is one quarter of the operating wavelength and is used to provide surge protection.
  • Short stub design - A transmission-line stub built into the adapter to help reflect or absorb unwanted signals, including surges.
  • Surge withstanding capability - The ability of the adapter to withstand and reduce high-voltage surges or transient signals in the coaxial line.
  • Coaxial connection - A connection between coaxial-cable-linked devices that uses an SPD adapter between them.

Who uses SIST EN IEC 61169-1-3:2026?

SIST EN IEC 61169-1-3:2026 is used by people who design, make, test, buy, or specify coaxial connectors with built-in surge protection. Typical users include:

  • RF connector manufacturers developing coaxial adapters with SPDs
  • Designers of telecommunications and signalling equipment
  • Test laboratories running sparkover, impulse durability, return loss, insertion loss, and insulation resistance tests
  • Quality managers checking that product specifications match the required electrical performance
  • Buyers and procurement teams writing technical requirements for protected coaxial connectors

In practice, these users rely on the standard to choose the right test setup, define acceptance criteria, and compare products on the same basis.

Which standards are used with SIST EN IEC 61169-1-3:2026?

StandardWhat it contributes
IEC 61083-1Requirements for instruments and software used in impulse tests; supports the measurement equipment used in this document
IEC 61169-1:2013Generic RF connector requirements and measuring methods; used for return loss and insulation resistance
IEC 61169-1-2The insertion loss method for RF connectors
IEC 61643-311:2013Performance requirements and test circuits for gas discharge tubes, including sparkover limits
IEC 61643-21:2025Further detail for the impulse durability test
IEC 60364-5-51Cited in the service-condition notes for indoor-use context
IEC 60721-3-3:1994Cited in the service-condition notes for outdoor environmental context

Annex ZA maps the normative references to their corresponding European publications.

What does the SIST EN IEC 61169-1-3:2026 document contain?

SIST EN IEC 61169-1-3:2026 contains the core requirements and the test circuits for SPDs built into coaxial connectors, plus three informative annexes with example equipment and layouts. Figures 1 and 2 show example coaxial adapters for a gas discharge tube SPD and a ¼ wavelength short stub SPD.

Figures 3 to 5 give the circuits for DC sparkover voltage, impulse sparkover voltage, and impulse durability testing. Annex A shows example equipment and a procedure for DC sparkover testing, Annex B does the same for impulse sparkover testing, and Annex C shows the impulse durability generator, measurement layout, and connector setup examples.

Relations

Effective Date
02-Jun-2026
Effective Date
02-Jun-2026
Effective Date
02-Jun-2026

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SIST EN IEC 61169-1-3:2026 - BARVE

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Frequently Asked Questions

SIST EN IEC 61169-1-3:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Radio-frequency connectors - Part 1-3: Electrical test methods - Surge withstand - Surge protective devices built-in coaxial connector - Performance requirements and testing methods (IEC 61169-1-3:2026)". This standard covers: IEC 61169-1-3:2026 is applicable to built-in devices (hereinafter referred to as "SPD" - surge protective device) or surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient over voltages. An SPD is intended to protect the electrical apparatus from transient over voltages and to divert surge currents. The SPD built in the coaxial connector can be a gas discharge tube type, a ¼ wavelength short stub type, a flash-off gap type, and a hybrid type thereof. The purpose of these built-in SPD is to protect modern electronic equipment connected to telecommunications and signalling networks with nominal system voltages up to 1 000 V (RMS) AC and 1 500 V DC.

IEC 61169-1-3:2026 is applicable to built-in devices (hereinafter referred to as "SPD" - surge protective device) or surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient over voltages. An SPD is intended to protect the electrical apparatus from transient over voltages and to divert surge currents. The SPD built in the coaxial connector can be a gas discharge tube type, a ¼ wavelength short stub type, a flash-off gap type, and a hybrid type thereof. The purpose of these built-in SPD is to protect modern electronic equipment connected to telecommunications and signalling networks with nominal system voltages up to 1 000 V (RMS) AC and 1 500 V DC.

SIST EN IEC 61169-1-3:2026 is classified under the following ICS (International Classification for Standards) categories: 33.120.30 - RF connectors. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN IEC 61169-1-3:2026 has the following relationships with other standards: It is inter standard links to SIST EN 61169-1:2014, SIST EN IEC 61169-1-2:2020, SIST EN 61643-311:2013. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN IEC 61169-1-3:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-september-2026
Radiofrekvenčni konektorji - 1-3. del: Električne preskusne metode - Odpornost na
prenapetost - Prenapetostna zaščitna naprava z vgrajenim koaksialnim
konektorjem - Zahtevane lastnosti in preskusne metode (IEC 61169-1-3:2026)
Radio-frequency connectors - Part 1-3: Electrical test methods - Surge withstand - Surge
protective devices built-in coaxial connector - Performance requirements and testing
methods (IEC 61169-1-3:2026)
Hochfrequenz-Steckverbinder - Teil 1-3: Elektrische Prüfverfahren -
Überspannungsschutz - Überspannungsschutzgeräte mit eingebautem Koaxialstecker -
Leistungsanforderungen und Prüfverfahren (IEC 61169-1-3:2026)
Connecteurs pour fréquences radioélectriques - Partie 1-3: Méthodes d'essais
électriques - Tenue aux tensions de choc - Connecteurs coaxiaux intégrés pour
parafoudres - Exigences de performance et méthodes d'essai (IEC 61169-1-3:2026)
Ta slovenski standard je istoveten z: EN IEC 61169-1-3:2026
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 61169-1-3

NORME EUROPÉENNE
EUROPÄISCHE NORM July 2026
ICS 33.120.30
English Version
Radio-frequency connectors - Part 1-3: Electrical test methods -
Surge withstand - Surge protective devices built in a coaxial
connector - Performance requirements and testing methods
(IEC 61169-1-3:2026)
Connecteurs pour fréquences radioélectriques - Partie 1-3: Hochfrequenz-Steckverbinder - Teil 1-3: Elektrische
Méthodes d'essais électriques - Tenue aux tensions de Prüfverfahren - Überspannungsschutz -
choc - Dispositifs de protection contre les surtensions Überspannungsschutzgeräte mit eingebautem
intégrés dans un connecteur coaxial - Exigences de Koaxialstecker - Leistungsanforderungen und Prüfverfahren
performance et méthodes d'essai (IEC 61169-1-3:2026)
(IEC 61169-1-3:2026)
This European Standard was approved by CENELEC on 2026-06-01. 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
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61169-1-3:2026 E

European foreword
The text of document 46F/738/FDIS, future edition 1 of IEC 61169-1-3, 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 61169-1-3:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-07-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-07-31
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 61169-1-3:2026 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60060-2:2025 NOTE Approved as EN IEC 60060-2:2025 (not modified)
IEC 60068-1:2013 NOTE Approved as EN 60068-1:2014 (not modified)
IEC 60068-2-38:2021 NOTE Approved as EN IEC 60068-2-38:2021 (not modified)
IEC 60364-5-51:2005 NOTE Approved as HD 60364-5-51:2009 +A11:2013
IEC 61643-12 NOTE Approved as CLC/TS 61643-12
IEC 61643-21:2025 NOTE Approved as EN IEC 61643-21:2026 (not modified)
IEC 62305-4 NOTE Approved as EN IEC 62305-4
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 61083-1 - Instruments and software used for - -
measurements in high-voltage and high-
current tests - Part 1: Requirements for
instruments for impulse tests
IEC 61169-1 2013 Radio frequency connectors - Part 1: EN 61169-1 2013
Generic specification - General
requirements and measuring methods
IEC 61169-1-2 - Radio-frequency connectors - Part 1-2: EN IEC 61169-1-2 -
Electrical test methods - Insertion loss
IEC 61643-311 2013 Components for low-voltage surge EN 61643-311 2013
protective devices - Part 311: Performance
requirements and test circuits for gas
discharge tubes (GDT)
IEC 61169-1-3 ®
Edition 1.0 2026-04
INTERNATIONAL
STANDARD
Radio-frequency connectors -
Part 1-3: Electrical test methods - Surge withstand - Surge protective devices
built in a coaxial connector - Performance requirements and testing methods
ICS 33.120.30  ISBN 978-2-8327-1219-1

IEC 61169-1-3:2026-04(en)
IEC 61169-1-3:2026 © IEC 2026
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Service and test conditions . 8
4.1 Service conditions . 8
4.1.1 Normal service conditions . 8
4.1.2 Abnormal service conditions . 8
4.2 Temperature and humidity test . 8
4.3 SPD testing . 9
5 Electrical requirements . 9
5.1 General . 9
5.2 Initial values . 9
5.2.1 Sparkover voltages . 9
5.2.2 Return loss (VSWR) . 9
5.2.3 Insertion loss . 9
5.2.4 Insulation resistance . 9
5.3 Test measurements and requirements – Impulse durability . 10
5.4 Requirements after application of load . 10
5.4.1 General . 10
5.4.2 Sparkover voltages . 10
5.4.3 Return loss (VSWR) . 10
5.4.4 Insertion loss . 10
5.4.5 Insulation resistance . 10
6 Test and measurement procedures and circuits . 10
6.1 DC sparkover voltage. 10
6.2 Impulse sparkover voltage . 11
6.3 Impulse durability . 11
6.4 Return loss (VSWR) . 12
6.5 Insertion loss . 12
6.6 Insulation resistance . 12
7 Details to be specified . 12
Annex A (informative) Measurement equipment examples of DC sparkover voltage
test . 13
A.1 Applicable tools . 13
A.2 Test overview . 14
A.3 Test procedure and method . 14
A.4 Test results . 16
Annex B (informative) Measurement equipment examples of impulse sparkover
voltage test . 17
B.1 Applicable tools . 17
B.2 Test overview . 17
B.3 Test results . 18
Annex C (informative) Measurement equipment examples of impulse durability test . 20
C.1 Impulse durability (applicable to signal and communication SPDs) . 20
IEC 61169-1-3:2026 © IEC 2026
C.2 Impulse durability category C2 (applicable to signal and communication
SPDs) . 20
C.3 Impulse durability category D1 (applicable to signal and communication
SPDs) . 20
C.4 Applicable tools and overview . 20
Bibliography . 24

Figure 1 – Coaxial adapter for surge protection device with gas discharge tube . 6
Figure 2 – Coaxial adapter for surge protection device with ¼ wavelength short stub. 7
Figure 3 – Circuit for DC sparkover voltage test at 100 V/s . 11
Figure 4 – Circuit for impulse sparkover voltage at 1 000 V/μs . 11
Figure 5 – Test circuits for impulse durability and overstressed fault mode . 12
Figure A.1 – Withstand voltage tester . 13
Figure A.2 – Oscilloscope . 13
Figure A.3 – High-voltage probe . 14
Figure A.4 – Test equipment overview . 15
Figure A.5 – Test results . 16
Figure B.1 – Lightning surge tester . 17
Figure B.2 – Test overview . 18
Figure B.3 – Test results . 19
Figure C.1 – Direct lightning impulse generator . 20
Figure C.2 – Names of the parts of the direct lightning impulse generator . 21
Figure C.3 – Impulse durability measurement layout . 22
Figure C.4 – Connector setup example . 23

IEC 61169-1-3:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Radio-frequency connectors -
Part 1-3: Electrical test methods - Surge withstand -
Surge protective devices built in a coaxial connector -
Performance requirements and testing methods

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 61169-1-3 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/738/FDIS 46F/741/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.
IEC 61169-1-3:2026 © IEC 2026
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 61169-1-3:2026 © IEC 2026
1 Scope
This part of IEC 61169 is applicable to built-in devices (hereinafter referred to as "SPD" – surge
protective device) or surge protection of telecommunications and signalling networks against
indirect and direct effects of lightning or other transient over voltages.
An SPD is intended to protect the electrical apparatus from transient over voltages and to divert
surge currents.
The SPD built in the coaxial connector can be a gas discharge tube type, a ¼ wavelength short
stub type, a flash-off gap type, and a hybrid type thereof.
The purpose of these built-in SPD is to protect modern electronic equipment connected to
telecommunications and signalling networks with nominal system voltages up to 1 000 V (RMS)
AC and 1 500 V DC.
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 61083-1, Instruments and software used for measurements in high-voltage and high-
current tests - Part 1: Requirements for instruments for impulse tests
IEC 61169-1:2013, Radio frequency connectors - Part 1: Generic speci
...