EN 61754-20:2012

SLOVENSKI STANDARD
01-oktober-2012
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Fibre optic interconnecting devices and passive components - Fibre optic connector
interfaces - Part 20: Type LC connector family (IEC 61754-20:2012)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von
Lichtwellenleiter-Steckverbindern - Teil 20: Steckverbinderfamilie der Bauart LC (IEC
61754-20:2012)
Dispositifs d'interconnexion et composants passifs à fibres optiques - Interfaces de
connecteurs pour fibres optiques - Partie 20: Famille de connecteurs de type LC (CEI
61754-20:2012)
Ta slovenski standard je istoveten z: EN 61754-20:2012
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61754-20
NORME EUROPÉENNE
August 2012
EUROPÄISCHE NORM
ICS 33.180.20 Supersedes EN 61754-20:2002

English version
Fibre optic interconnecting devices and passive components -
Fibre optic connector interfaces -
Part 20: Type LC connector family
(IEC 61754-20:2012)
Dispositifs d'interconnexion  Lichtwellenleiter - Verbindungselemente
et composants passifs à fibres optiques - und passive Bauteile - Steckgesichter
Interfaces de connecteurs von Lichtwellenleiter- Steckverbindern -
pour fibres optiques - Teil 20: Steckverbinderfamilie
Partie 20: Famille de connecteurs der Bauart LC
de type LC (IEC 61754-20:2012)
(CEI 61754-20:2012)
This European Standard was approved by CENELEC on 2012-05-10. 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61754-20:2012 E
Foreword
The text of document 86B/3343/FDIS, future edition 2 of IEC 61754-20, prepared by IEC/SC 86B
"Fibre optic interconnecting devices and passive components" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 61754-20:2012.
The following dates are fixed:
(dop) 2013-02-10
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2013-05-10
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61754-20:2002.

EN 61754-20:2002:
The changes are to reconsider the whole document and to add Interface IEC 61754-20-9 to
IEC 61754-20-16 for plastic optical fibre (POF).

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61754-20:2012 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 standards indicated:

IEC 60793-2-40 NOTE Harmonised as EN 60793-2-40.
IEC 60794-2-50 NOTE Harmonised as EN 60794-2-50.

- 3 - EN 61754-20:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 61755-3 Series Fibre optic interconnecting devices and EN 61755-3 Series
passive components - Fibre optic connector
optical interfaces
IEC 61754-20 ®
Edition 2.0 2012-04
INTERNATIONAL
STANDARD
Fibre optic interconnecting devices and passive components – Fibre optic

connector interfaces –
Part 20: Type LC connector family

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 33.180.20 ISBN 978-2-88912-986-7

– 2 – 61754-20 © IEC:2012(E)
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Description . 6
4 Interfaces . 6
Annex A (informative) Additional adaptor dimensional information. 22
Bibliography . 26

Figure 1 – Plug connector interface reference planes . 8
Figure 2 – Detail A of Figure 1 – Plug connector interface – Expanded view drawings
not-to-scale . 9
Figure 3 – Plug connector interface . 10
Figure 4 – APC plug connector interface . 11
Figure 5 – Duplex plug interface . 12
Figure 6 – Simplex adaptor interface . 14
Figure 7 – Junior (Jr.) adaptor interface (optional – note g of Table 3) . 15
Figure 8 – Duplex adaptor interface . 16
Figure 9 – Active device receptacle interface . 18
Figure 10 – Duplex active device receptacle interface . 19
Figure 11 – Pin gauge for active device receptacle . 20
Figure A.1 – Simplex adaptor . 22
Figure A.2 – Duplex square flange adaptor . 23
Figure A.3 – Duplex rectangular flange adaptor . 24
Figure A.4 –Quad rectangular flange adaptor . 25

Table 1 – Plug to Adaptor/Receptacle Intermateability . 7
Table 2 – Plug to Plug Intermateability . 8
Table 3 – Dimensions of the plug connector interface . 12
Table 4 – Plug connector interface – Ferrule grade . 13
Table 5 – Dimensions of the adaptor interface . 16
Table 6 – Dimensions of the active device receptacle . 19
Table 7 – Active device receptacle interface – Alignment sleeve grade . 20
Table 8 – Pin gauge grade . 21
Table A.1 – Dimensions of simplex adaptor . 22
Table A.2 – Dimensions of duplex square flange adaptor . 23
Table A.3 – Dimensions of duplex rectangular flange adaptor . 24
Table A.4 – Dimensions for quad rectangular flange adaptor . 25

61754-20 © IEC:2012(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –

Part 20: Type LC connector family

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
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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
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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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.
International Standard IEC 61754-20 has been prepared by subcommittee SC86B: Fibre optic
interconnecting devices and passive components.
This second edition cancels and replaces the first edition published in 2002. It constitutes a
technical revision. The changes with respect to the previous edition are to reconsider the whole
document and to add Interface IEC 61754-20-9 to IEC 61754-20-16 for a plastic optical fibre
(POF).
...