SIST EN 61754-20:2012/A1:2022

Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 20: Type LC connector family (IEC 61754-20:2012/AMD1:2022)

Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von Lichtwellenleiter- Steckverbindern - Teil 20: Steckverbinderfamilie der Bauart LC (IEC 61754-20:2012/AMD1:2022)

Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces de connecteurs pour fibres optiques - Partie 20: Famille de connecteurs de type LC (IEC 61754-20:2012/AMD1:2022)

Optični spojni elementi in pasivne komponente - Vmesniki za optične konektorje - 20. del: Družina konektorjev tipa LC - Dopolnilo A1 (IEC 61754-20:2012/AMD1:2022)

Amandma A1:2022 je dodatek k standardu SIST EN 61754-20:2012.
Mednarodni standard določa standardne dimenzije vmesnikov za družino konektorjev tipa LC.

General Information

• Status: Published
• Public Enquiry End Date: 17-Feb-2022
• Publication Date: 04-Sep-2022
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 25-Aug-2022
• Due Date: 30-Oct-2022
• Completion Date: 05-Sep-2022
• Ref Project: EN 61754-20:2012/A1:2022 - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 20: Type LC connector family

Relations

• Referred By: SIST EN 61300-3-22:2011 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-22: Examinations and measurements - Ferrule compression force (IEC 61300-3-22:2010)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 61753-021-06:2024 - Fibre optic interconnecting devices and passive components - Performance standard - Part 021-06: Single-mode fibre optic connectors terminated as pigtails and patchcords for category OP+ - Extended outdoor protected environment (IEC 61753-021-06:2023)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 61753-051-02:2022 - Fibre optic interconnecting devices and passive components - Performance standard - Part 051-02: Plug-receptacle style single-mode fibre fixed optical attenuators for category C - Controlled environments (IEC 61753-051-02:2022)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 62150-3:2016 - Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces (IEC 62150-3:2015)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 62148-11:2025 - Fibre optic active components and devices - Package and interface standards - Part 11: 14-pin modulator integrated laser diode modules and pump laser diode modules (IEC 62148-11:2024)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 61300-3-45:2023 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-45: Examinations and measurements - Attenuation of random mated multi-fibre connectors (IEC 61300-3-45:2023)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 61753-051-3:2013 - Fibre optic interconnecting devices and passive components - Performance standard - Part 051-3: Single mode fibre plug style optical attenuator for category U - Uncontrolled environment
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 61754-1:2014 - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 1: General and guidance
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 62148-17:2023 - Fibre optic active components and devices - Package and interface standards - Part 17: Transmitter and receiver components with dual coaxial RF connectors (IEC 62148-17:2023)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 62150-3:2012 - Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces (IEC 62150-3:2012)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 62148-1:2018 - Fibre optic active components and devices - Package and interface standards - Part 1: General and guidance (IEC 62148-1:2017)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 61755-3-32:2016 - Fibre optic interconnecting devices and passive components - Fibre optic connector optical interfaces - Part 3-32: Optical interface, 8 degrees angled PC, thermoset epoxy rectangular ferrule, single mode fibres
• Effective Date: 03-Feb-2026
• Referred By: SIST EN IEC 62148-15:2021 - Fibre optic active components and devices - Package and interface standards - Part 15: Discrete vertical cavity surface emitting laser packages (IEC 62148-15:2021)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 61753-057-2:2013 - Fibre optic interconnecting devices and passive components - Performance standard - Part 057-2: Single mode fibre plug-recptacle-receptacle style optical fuse for category C - Controlled environment (IEC 61753-057-2:2012)
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 62148-15:2010 - Fibre optic active components and devices - Package and interface standards - Part 15: Discrete vertical cavity surface emitting laser packages (IEC 62148-15:2009)
• Effective Date: 03-Feb-2026

Overview

SIST EN 61754-20:2012/A1:2022 is a European standard established by CLC and based on IEC 61754-20:2012/AMD1:2022. This amendment specifies interface standards for the type LC fibre optic connector family, a category widely recognized for its compact form factor and high performance in optical communication networks. The standard defines the geometry, dimensions, and intermateability requirements necessary to achieve reliable and efficient optical connections using LC-type connectors.

By detailing the technical interfaces of LC connectors, including simplex, duplex, and quad designs and their corresponding physical and active device interfaces, SIST EN 61754-20:2012/A1:2022 enables interoperability across multiple manufacturers and ensures consistent performance in fibre optic interconnections and passive component applications.

Key Topics

• LC Connector Family: Covers the full spectrum of LC connector types including simplex, duplex, quad, and associated adaptors and receptacle interfaces.
• Physical Contact (PC) and Angled Physical Contact (APC): The standard specifies both PC and APC (8°) ferrule endface styles to address different optical performance needs.
• Plastic Optical Fibre (POF) Interfaces: Includes standardized interfaces for connectors and adaptors using 1 mm and 1.25 mm plastic optical fibre.
• Intermateability Requirements: Tables provide clear guidance on the compatibility between various plug, receptacle, and adaptor interfaces, ensuring flexible system integration.
• Dimensional Standardization: The document establishes strict geometric and mechanical interface criteria to maintain reproducibility and reliability.
• Figure and Table References: Updated figures and tables illustrate duplex and quad plug/adaptor/receptacle interfaces for clarity and uniformity.

Applications

The SIST EN 61754-20:2012/A1:2022 standard is essential across a range of industries and environments utilizing fibre optic communication, particularly where LC connectors are preferred for their compact size and high-density capability:

• Telecommunications: Backbone, metro, and access networks make extensive use of LC connectors for optimized fibre management and performance.
• Data Centers: High-density patch panels and equipment in data centers rely on standardized LC connector interfaces for scalability and efficient cable routing.
• Enterprise Networks: Campus and building fibre networks deploy LC connectors for both horizontal and vertical structured cabling systems.
• Industrial and Medical Equipment: Ensures reliable optical connections in harsh or precision-driven environments using standardized LC interfaces.
• Active Device Integration: Specifies interfaces for connecting LC fibre optics directly to transceivers and other active network devices.

Related Standards

For comprehensive system compatibility and ongoing product development, consider these related standards:

• IEC 61754 Series: General requirements and dimensions for a variety of fibre optic connector families.
• IEC 61300 Series: Test and measurement procedures for fibre optic interconnecting devices and passive components.
• ISO/IEC 11801: International standard for generic cabling for customer premises, referencing connector requirements.
• EN 50173 Series: European equivalent for customer premises cabling, aligned with the use of LC connectors.
• IEC 61753 Series: Performance standards for fibre optic passive components.

By adhering to SIST EN 61754-20:2012/A1:2022, organizations achieve robust interoperability, streamlined maintenance, and the assurance of international best practices in deploying the type LC connector family in modern fibre optic networks.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2022
Optični spojni elementi in pasivne komponente - Vmesniki za optične konektorje -
20. del: Družina konektorjev tipa LC - Dopolnilo A1 (IEC 61754-20:2012/AMD1:2022)
Fibre optic interconnecting devices and passive components - Fibre optic connector
interfaces - Part 20: Type LC connector family (IEC 61754-20:2012/AMD1:2022)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von
Lichtwellenleiter- Steckverbindern - Teil 20: Steckverbinderfamilie der Bauart LC (IEC
61754-20:2012/AMD1:2022)
Dispositifs dinterconnexion et composants passifs fibroniques - Interfaces de
connecteurs pour fibres optiques - Partie 20: Famille de connecteurs de type LC (IEC
61754-20:2012/AMD1:2022)
Ta slovenski standard je istoveten z: EN 61754-20:2012/A1:2022
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61754-20:2012/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM August 2022
ICS 33.180.20
English Version
Fibre optic interconnecting devices and passive components -
Fibre optic connector interfaces - Part 20: Type LC connector
family
(IEC 61754-20:2012/AMD1:2022)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive
fibroniques - Interfaces de connecteurs à fibres optiques - Bauteile - Steckgesichter von Lichtwellenleiter-
Partie 20: Famille de connecteurs de type LC Steckverbindern - Teil 20: Steckverbinderfamilie der
(IEC 61754-20:2012/AMD1:2022) Bauart LC
(IEC 61754-20:2012/AMD1:2022)
This amendment A1 modifies the European Standard EN 61754-20:2012; it was approved by CENELEC on 2022-08-03. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61754-20:2012/A1:2022 E

European foreword
The text of document 86B/4534/CDV, future IEC 61754-20/AMD1, prepared by SC 86B "Fibre optic
interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN 61754-20:2012/A1:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-05-03
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-08-03
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 61754-20:2012/AMD1:2022 was approved by CENELEC as
a European Standard without any modification.

IEC 61754-20 ®
Edition 2.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Fibre optic interconnecting devices and passive components – Fibre optic

connector interfaces –
Part 20: Type LC connector family

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces de

connecteurs à fibres optiques –

Partie 20: Famille de connecteurs de type LC

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-3953-7

– 2 – IEC 61754-20:2012/AMD1:2022
© IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –

Part 20: Type LC connector family

AMENDMENT 1
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,
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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
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