Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 4: Type SC connector family

This part of IEC 61754 defines the standard interface dimensions for type SC family of connectors.

Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von Lichtwellenleiter-Steckverbindern - Teil 4: Bauart SC-Steckverbinderfamilie

/

IEC 61754-4:2013 définit les dimensions des interfaces normalisées pour la famille des connecteurs de type SC. La présente deuxième édition annule et remplace la première édition publiée en 1997 et constitue une révision technique. La présente édition contient les modifications techniques majeures suivantes par rapport à l'édition précédente:
- ajout de l'interface des fiches et des raccords duplex;
- réexamen de l'ensemble du contenu de la norme. Le contenu du corrigendum de janvier 2014 a été inclut dans la présente version.
Mots clés: dimensions des interfaces normalisées pour la famille des connecteurs de type SC

Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev - 4. del: Konektorska družina vrste SC

Ta del standarda IEC 61754 določa standardne dimenzije vmesnikov za konektorsko družino vrste SC.

General Information

Status
Withdrawn
Publication Date
09-Dec-2013
Withdrawal Date
10-Apr-2023
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
11-Apr-2023
Due Date
04-May-2023
Completion Date
11-Apr-2023

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61754-4:2014
01-januar-2014
1DGRPHãþD
SIST EN 61754-4:1997
SIST EN 61754-4:1997/A1:2001
SIST EN 61754-4:1997/A2:2002
2SWLþQLVSRMQLHOHPHQWLLQSDVLYQHNRPSRQHQWH9PHVQLNLRSWLþQLKNRQHNWRUMHY
GHO.RQHNWRUVNDGUXåLQDYUVWH6&
Fibre optic interconnecting devices and passive components - Fibre optic connector
interfaces - Part 4: Type SC connector family
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von
Lichtwellenleiter-Steckverbindern - Teil 4: Bauart SC-Steckverbinderfamilie
/
Ta slovenski standard je istoveten z: EN 61754-4:2013
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
SIST EN 61754-4:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 61754-4:2014

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SIST EN 61754-4:2014

EUROPEAN STANDARD
EN 61754-4

NORME EUROPÉENNE
November 2013
EUROPÄISCHE NORM

ICS 33.180.20 Supersedes EN 61754-4:1997 + A1:1999 + A2:2001


English version


Fibre optic interconnecting devices and passive components -
Fibre optic connector interfaces -
Part 4: Type SC connector family
(IEC 61754-4:2013)


Dispositifs d'interconnexion et composants Lichtwellenleiter -
passifs à fibres optiques - Verbindungselemente und passive
Interfaces de connecteurs à fibres Bauteile - Steckgesichter von
optiques Lichtwellenleiter-Steckverbindern -
(CEI 61754-4:2013) Teil 4: Steckverbinderfamilie der Bauart
SC (IEC 61754-4:2013)




This European Standard was approved by CENELEC on 2013-08-26. 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

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61754-4:2013 E

---------------------- Page: 3 ----------------------

SIST EN 61754-4:2014
EN 61754-4:2013 - 2 -
Foreword
The text of document 86B/3620/FDIS, future edition 2 of IEC 61754-4, prepared by subcommittee 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 61754-4:2013.
The following dates are fixed:
(dop) 2014-05-26
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2014-08-26
• latest date by which the national
standards conflicting with the
document have to be withdrawn

This document supersedes EN 61754-4:1997 + A1:1999 + A2:2001.
EN 61754-4:2013 includes the following significant technical changes with respect to EN 61754-
4:1997 + A1:1999 + A2:2001:
a) addition of the duplex plug and adaptor connector interface;

b) reconsideration of the overall content of the standard.

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 61754-4:2013 was approved by CENELEC as a European
Standard without any modification.

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SIST EN 61754-4:2014
- 3 - EN 61754-4:2013
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

1)
IEC 61755-3-1 - Fibre optic interconnecting devices and prEN 61755-3-1 -
passive components -Fibre optic connector
optical interfaces -
Part 3-1:Connectors with 2,5 mm and 1,25
mm diameter cylindrical full zirconia ferrule,
non-angled single mode non-dispersion
shifted fibres


1)
IEC 61755-3-2 - Fibre optic interconnecting devices and prEN 61755-3-2 -
passive components -Fibre optic connector
optical interfaces -
Part 3-2: Connectors with 2,5 mm and 1,25
mm diameter cylindrical full zirconia ferrule,
angled single mode non-dispersion shifted
fibres



1)
 At draft stage

---------------------- Page: 5 ----------------------

SIST EN 61754-4:2014

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SIST EN 61754-4:2014



IEC 61754-4

®


Edition 2.0 2013-07




INTERNATIONAL



STANDARD



















Fibre optic interconnecting devices and passive components – Fibre optic

connector interfaces –

Part 4: Type SC connector family


























INTERNATIONAL

ELECTROTECHNICAL

COMMISSION

PRICE CODE
W


ICS 33.180.20 ISBN 978-2-8322-0924-0



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 7 ----------------------

SIST EN 61754-4:2014
– 2 – 61754-4 © IEC:2013(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Description . 6
4 Interfaces . 6
Bibliography . 38

Figure 1 – Simplex PC plug connector interface . 8
Figure 2 – Simplex adaptor connector interface . 11
Figure 3 – Pin gauge for adaptor . 13
Figure 4 – Duplex PC plug connector interface . 14
Figure 5 – Duplex adaptor connector interface . 17
Figure 6 (continued overleaf) . 20
Figure 6 – Simplex APC plug connector interface . 21
Figure 7 (continued overleaf) . 23
Figure 7 – Duplex APC plug connector interface . 24
Figure 8 – Simplex active device receptacle interface for APC connector plug. 26
Figure 9 – Simplex active device receptacle interface for PC connector plug . 29
Figure 10 – Duplex active device receptacle interface for APC connector plug . 32
Figure 11 – Duplex active device receptacle interface for PC connector plug . 35

Table 1 – Intermateability of interface . 7
Table 2 – Dimensions of the simplex PC plug connector interface . 9
Table 3 – Grade . 10
Table 4 – Dimensions of the simplex adaptor connector interface . 12
Table 5 – Grade . 13
Table 6 – Pin gauge dimensions . 13
Table 7 – Dimensions of the duplex PC plug connector interface . 15
Table 8 – Grade . 16
Table 9 – Dimensions of the duplex adaptor connector interface . 18
Table 10 – Grade . 19
Table 11 – Dimensions of the simplex APC plug connector interfaces . 22
Table 12 – Dimensions of the duplex APC plug connector interfaces . 25
Table 13 – Dimensions of the simplex active device receptacle interface for APC
connector plug . 27
Table 14 – Alignment feature grade . 28
Table 15 – Mechanical stop feature grade . 28
Table 16 – Dimensions of the simplex active device receptacle interface for PC
connector plug . 30
Table 17 – Alignment feature grade . 31
Table 18 – Mechanical stop feature grade . 31

---------------------- Page: 8 ----------------------

SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 3 –
Table 19 – Dimensions of the duplex active device receptacle interface for APC
connector plug . 33
Table 20 – Alignment feature grade . 34
Table 21 – Mechanical stop feature grade . 34
Table 22 – Dimensions of the duplex active device receptacle interface for PC
connector plug . 36
Table 23 – Alignment feature grade . 37
Table 24 – Mechanical stop feature grade . 37

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SIST EN 61754-4:2014
– 4 – 61754-4 © IEC:2013(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –

Part 4: Type SC 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
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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61754-4 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 1997 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of the duplex plug and adaptor connector interface;
b) reconsideration of the overall content of the standard.

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SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
86B/3620/FDIS 86B/3652/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61754 series, under the general title Fibre optic interconnecting
devices and passive components – Fibre optic connector interfaces, can be found on the IEC
website.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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SIST EN 61754-4:2014
– 6 – 61754-4 © IEC:2013(E)
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –

Part 4: Type SC connector family



1 Scope
This part of IEC 61754 defines the standard interface dimensions for type SC family of
connectors.
2 Normative references
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.
IEC 61755-3-1, Fibre optic connector optical interfaces – Part 3-1:Optical interface, 2,5 mm
and 1,25 mm diameter cylindrical full zirconia PC ferrule, single mode fibre
IEC 61755-3-2, Fibre optic connector optical interfaces – Part 3-2: Optical interface, 2,5 mm
and 1,25 mm diameter cylindrical full zirconia ferrules for 8 degrees angled-PC single mode
fibres
3 Description
The parent connector for the type SC connector family is a single position plug connector which
is characterized by a 2,5 mm nominal ferrule diameter. It includes a push-pull coupling
mechanism which is spring loaded relative to the ferrule in the direction of the optical axis. The
plug has a single male key which may be used to orient and limit the relative position between
the connector and the component to which it is mated. The optical alignment mechanism of the
connector is of a resilient sleeve style.
This part of IEC 61754 defines the standard interface dimensions of active device receptacles
for the type SC connectors. The receptacles are used to retain the connector plug and
mechanically maintain the optical datum target of the plugs at a defined position within the
receptacle housings.
4 Interfaces
This standard contains the following standard interfaces:
Interface IEC 61754-4-1: simplex plug connector interface – push/pull, PC
Interface IEC 61754-4-2: simplex adaptor connector interface – push/pull
Interface IEC 61754-4-3: duplex plug connector interface – push/pull, PC
Interface IEC 61754-4-4: duplex adaptor connector interface – push/pull
Interface IEC 61754-4-5: simplex plug connector interface – push/pull, APC 8°
Interface IEC 61754-4-6: duplex plug connector interface – push/pull, APC 8°

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SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 7 –
Interface IEC 61754-4-X1: simplex active device receptacle interface – for APC 8°connector
plug
Interface IEC 61754-4-X2: simplex active device receptacle interface – for PC connector plug
Interface IEC61754-4-X3: duplex active device receptacle interface – for APC 8°connector plug
Interface IEC 61754-4-X4: duplex active device receptacle interface – for PC connector plug
The plug of interface IEC 61754-4-1 and interface IEC 61754-4-3 has a ferrule with a
spherically polished endface (PC). The plug of interface IEC 61754-4-5 and interface
IEC 61754-4-6 has a ferrule with a spherically polished angled endface which may take any of
the angled PC (APC) forms and realizes a physical contact.
Table 1 shows the intermateability of interface.
Table 1 – Intermateability of interface
Adaptors/active device receptacles interfaces
Plugs
61754-4-2 61754-4-4 61754-4-X1 61754-4-X2 61754-4-X3 61754-4-X4
61754-4-1 Mate Mate Not mate Mate Not mate Mate
61754-4-3 Not mate Mate Not mate Not mate Not mate Mate
61754-4-5 Mate Mate Mate Not mate Mate Not mate
61754-4-8 Not mate Mate Not mate Not mate Mate Not mate

Figure 1 is an example of a simplex plug connector interface. Table 2 gives dimensions of the
simplex plug connector interface and Table 3 gives the grade of the simplex PC plug connector
interface.
A chamfer or radius is allowed to a maximum depth of 1,2 mm from the ferrule endface.

---------------------- Page: 13 ----------------------

SIST EN 61754-4:2014
– 8 – 61754-4 © IEC:2013(E)
Mechanical
datum target
Optical
datum target
Ferrule
View from C direction
Coupling sleeve
Guide key
Guide key
View from B direction
Ferrule endface geometry

IEC  1646/13

Figure 1 – Simplex PC plug connector interface

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SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 9 –
Table 2 – Dimensions of the simplex PC plug connector interface
Reference Dimensions Remarks
Minimum Maximum
2,500 mm See Table 3
A
B 4,8 mm 4,9 mm
C 6,8 mm 7,4 mm
D 4,9 mm 5,3 mm
E 6,7 mm 6,8 mm
F 19º 23°
25º 35°
G
a
H 7,15 mm 7,5 mm
I 0,8 mm 1,2 mm
J 5,3 mm 5,5 mm
K – 0,05 mm
b
L 2,11 mm –
b c
M 2,0 mm 2,8 mm and
N 6,6 mm 6,8 mm
O 1,6 mm 1,8 mm
P 8,89 mm 8,99 mm
Q 0,8 mm 1,0 mm
R 7,29 mm 7,39 mm
S 0,8 mm 0,90 mm Radius
4,05 mm 4,15 mm
T
U 5,4 mm 5,6 mm
b
V 0 mm 0,5 mm
BC 0° 0,5° 45° chamfer
d
BF 5 mm 30 mm Radius,
e
BG 0,8 mm – Diameter
25° 35° Angle
BI
a
Dimension H is given for plug endface when not mated. It is movable by a certain axial compression force,
with direct contacting endfaces, and therefore dimension H is variable. Ferrule compression force shall be 7,8
N to 11,8 N when the dimension H is 7 mm ± 0,1 mm.
b
Coupling sleeve shall be movable toward right and left direction. These dimensions are given when the
coupling sleeve is moved in its most right-direction position.
c
Dimension M shall be below 0 mm, when a coupling sleeve is moved to its most left-direction position.
d
Dome eccentricity of the spherical polished endface shall be less than 70 μm.
e
See IEC 61755-3-1.

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SIST EN 61754-4:2014
– 10 – 61754-4 © IEC:2013(E)
Table 3 – Grade
Dimensions
mm
Grade Remarks
A
Minimum Maximum
a
A – –
a
B – –
a
C – –
a
D – –
b
Am 2,497 2,500
b
Bm 2,497 2,500
b
Cm 2,494 2,500
a
See IEC 61755-3-1.
b
See IEC 61755-6-1.

Figure 2 is an example of a simplex adaptor connector interface. Table 4 gives dimensions of
the simplex adaptor connector interface and Table 5 gives the grade of the simplex adaptor
connector interface.

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SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 11 –
Mechanical
datum target
Guide groove
Guide groove
Cross-section A-A’
Projection from B direction
IEC  1647/13

Figure 2 – Simplex adaptor connector interface

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SIST EN 61754-4:2014
– 12 – 61754-4 © IEC:2013(E)
Table 4 – Dimensions of the simplex adaptor connector interface
Dimensions
Reference Remarks
Minimum Maximum
 See Table 5
A
B 4,69 mm 4,79 mm
D 4,9 mm 5,5 mm
H 6,9 mm 7,1 mm
I 0,4 mm 0,8 mm
J 5,51 mm 5,90 mm
0,06 mm 1,00 mm
K
L 1,9 mm 2,1 mm
O 2,0 mm 2,2 mm
P 9,0 mm 9,1 mm
R 7,4 mm 7,5 mm
S 1,0 mm 1,1 mm Radius
T 3,80 mm 4,04 mm
U 5,0 mm 5,3 mm
V 0,6 mm 1,6 mm
AA 27° 33° Angle
AB 0,8 mm 1,0 mm
AC 0,4 mm 0,6 mm Radius
AD 0,7 mm 0,8 mm
0,4 mm 0,6 mm
AE
AI 2,7 mm 2,8 mm
a
BA 5,4 mm 5,6 mm
a
BB 10,8 mm 11,2 mm
a
It may be of a structure as shown by an alternate long and short dash line shown in Figure 2.

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SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 13 –
Table 5 – Grade
Dimensions
mm
Grade Remarks
A
Minimum Maximum
a
See Note – – Resilient sleeve, and Note

NOTE Add the grade number to the interface reference number.
a
The connector alignment feature is a resilient sleeve. The feature shall accept a gauge
pin shown in Figure 3 to the centre of the adaptor with a force of 2 N to 5,9 N under
the condition that another gauge pin is inserted into the feature from the other side.
The centre of the adaptor is defined by the right side position of the dimension H.

Figure 3 is an example of a pin gauge for adaptor. Table 6 gives pin gauge dimensions.
C or R
IEC  1648/13


Figure 3 – Pin gauge for adaptor
Table 6 – Pin gauge dimensions
Dimensions
mm
Reference Remarks
Minimum Maximum
CK 2,498 5 2,499 5 Surface roughness
Grade N4 (0,2 μm radius)
CL 2,8 4,8
CN 7 15

Figure 4 is an example of a duplex PC plug connector interface. Table 7 gives dimensions of
the duplex PC plug connector interface and Table 8 gives the grade of the duplex PC plug
connector interface.
A chamfer or radius is allowed to a maximum depth of 1,2 mm from the ferrule endface.

---------------------- Page: 19 ----------------------

SIST EN 61754-4:2014
– 14 – 61754-4 © IEC:2013(E)
Mechanical
datum target
Optical
datum target
Ferrule
Guide key
Delatch housing
Partial cross-section A-A’
View from B direction
Ferrule endface geometry

IEC  1649/13

Figure 4 – Duplex PC plug connector interface

---------------------- Page: 20 ----------------------

SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 15 –
Table 7 – Dimensions of the duplex PC plug connector interface
Dimensions
Reference Remarks
Minimum Maximum
A 2,500 mm See Table 8
B 4,8 mm 4,9 mm
6,8 mm 7,4 mm
C
4,9 mm 5,3 mm
D
E 6,7 mm 6,8 mm
F 19° 23° Angle
G 25° 35° Angle
a
H 7,15 mm 7,5 mm
I 0,8 mm 1,2 mm
J 5,3 mm 5,5 mm
K – 0,05 mm
b
L 2,11 mm  –
b c
M 2,0 mm 2,8 mm and
N 6,6 mm 6,8 mm
O 1,6 mm 1,8 mm
d
P 8,79 mm 8,89 mm
Q 0,8 mm 1,0 mm
R 7,29 mm 7,39 mm
S 0,8 mm 0,9 mm Radius
T 4,05 mm 4,15 mm
U 5,4 mm 5,6 mm
b
0 mm 0,5 mm
V
BC 0 mm 0,5 mm Degree chamfer
e
DB 12.65 mm 12.75 mm
DD 7 –
f
BF 5 mm  30 mm Radius,
g
BG – – Diameter
BI 25° 35°
a
Dimension H is given for plug endface when not mated. It is movable by a certain axial compression force,
with direct contacting endfaces, and therefore dimension H is variable. Ferrule compression force shall be 7,8
N to 11,8 N when the dimension H is 7 mm ± 0,1 mm.
b
The delatch housing shall be movable towards right and left direction. Dimensions L, M and V are given when
the delatch housing is moved in its extreme right-direction position.
c
Dimension M shall be below 0 mm, when the delatch housing is moved to its most left-direction position.
d
The delatch housing may be a rigid sleeve. When two simplex plugs are retained together by a flexible sleeve,
the dimension P shall be from 8,89 mm to 8,99 mm.
e
The delatch housing may be a rigid sleeve. When two simplex plugs are retained together by a flexible sleeve,
the dimension DB shall be from 12,25 mm to 13,15 mm.
f
The dome eccentricity of the spherical polished endface shall be less than 70 μm.
g
See IEC 61755-3-1.

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SIST EN 61754-4:2014
– 16 – 61754-4 © IEC:2013(E)
Table 8 – Grade
Dimensions
mm
Grade Remarks
A
Minimum Maximum
a
A – –
a
B – –
a
C – –
a
D – –
b
Am 2,497 2,500
b
Bm 2,497 2,500
a
See IEC 61755-3-1.
b
See IEC 61755-6-1.

Figure 5 is an example of a duplex adaptor connector interface. Table 8 gives dimensions of
the duplex adaptor connector interface and Table 9 gives the grade of the duplex adaptor
connector interface.

---------------------- Page: 22 ----------------------

SIST EN 61754-4:2014
61754-4 © IEC:2013(E) – 17 –
Mechanical
datum target
Guide groove
Partial cross-section A-A’
Guide groove
Cross-section B-B’
IEC  1650/13


Figure 5 – Duplex adaptor connector interface

---------------------- Page: 23 ----------------------

SIST EN 61754-4:2014
– 18 – 61754-4 © IEC:2013(E)
Table 9 – Dimensions of the duplex adaptor connector interface
Dimensions
Reference Remarks
Minimum Maximum
A  See Table 10
B 4,39 mm 4,69 mm
D 4,9 mm 5,5 mm
H 6,9 mm 7,1 mm
I 0,4 mm 0,8 mm
J 5,51 mm 5,90 mm
K 0,06 mm 1,00 mm
L 1,9 mm 2,1 mm
O 2,0 mm 2,2 mm
9,0 mm 9,1 mm
P
R 7,4 mm 7,5 mm
S 1,0 mm 1,1 mm Radius
3,80 mm 4,04 mm
T
U 5,0 mm 5,3 mm
V 0,6 mm 1,6 mm
AA 27° 33° A
...

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