IEC 60874-14-4:1997

Connectors for optical fibres and cables - Part 14-4: Detail specification for fibre optic adaptor (simplex) type SC for multi-mode fibre

General Information

• Status: Published
• Publication Date: 23-Jun-1997
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Current Stage: PPUB - Publication issued
• Start Date: 31-May-1997
• Completion Date: 24-Jun-1997

Standards Content (Sample)

INTERNATIONAL
IEC
STANDARD
60874-14-4
QC 910004XX0004
First edition
1997-06
Connectors for optical fibres and cables –
Part 14-4:
Detail specification for fibre optic adaptor
(simplex) type SC for multimode fibre
Reference number
Validité de la présente publication Validity of this publication
Le contenu technique des publications de la CEI est The technical content of IEC publications is kept under
constamment revu par la CEI afin qu'il reflète l'état constant review by the IEC, thus ensuring that the
actuel de la technique. content reflects current technology.
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reconfirmation de la publication sont disponibles of the publication is available from the IEC Central
auprès du Bureau Central de la CEI. Office.
Les renseignements relatifs à ces révisions, à Information on the revision work, the issue of revised
l'établissement des éditions révisées et aux editions and amendments may be obtained from IEC
amendements peuvent être obtenus auprès des National Committees and from the following IEC
Comités nationaux de la CEI et dans les documents sources:
ci-dessous:
• Bulletin de la CEI • IEC Bulletin
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Publié annuellement Published yearly
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Publié annuellement et mis à jour régulièrement Published yearly with regular updates
Terminologie Terminology
En ce qui concerne la terminologie générale, le lecteur For general terminology, readers are referred to
se reportera à la CEI 60050: Vocabulaire IEC 60050: International Electrotechnical Vocabulary
Electrotechnique International (VEI), qui se présente (IEV), which is issued in the form of separate chapters
sous forme de chapitres séparés traitant chacun d'un each dealing with a specific field. Full details of the
sujet défini. Des détails complets sur le VEI peuvent IEV will be supplied on request. See also the IEC
être obtenus sur demande. Voir également le Multilingual Dictionary.
dictionnaire multilingue de la CEI.
Les termes et définitions figurant dans la présente The terms and definitions contained in the present
publication ont été soit tirés du VEI, soit publi-cation have either been taken from the IEV or
spécifiquement approuvés aux fins de cette have been specifically approved for the purpose of this
publication. publication.
Symboles graphiques et littéraux Graphical and letter symbols
Pour les symboles graphiques, les symboles littéraux For graphical symbols, and letter symbols and signs
et les signes d'usage général approuvés par la CEI, le approved by the IEC for general use, readers are
lecteur consultera: referred to publications:
– IEC 60027: Letter symbols to be used in electrical
– la CEI 60027: Symboles littéraux à utiliser en
technology;
électrotechnique;
– IEC 60417: Graphical symbols for use on
– la CEI 60417: Symboles graphiques utilisables sur
equipment. Index, survey and compilation of the
le matériel. Index, relevé et compilation des feuilles
individuelles; single sheets;
Symboles graphiques pour schémas; – IEC 60617: Graphical symbols for diagrams;
– la CEI 60617:
and for medical electrical equipment,
et pour les appareils électromédicaux,
– IEC 60878: Graphical symbols for electromedical
– la CEI 60878: Symboles graphiques pour
equipment in medical practice.
équipements électriques en pratique médicale.
Les symboles et signes contenus dans la présente The symbols and signs contained in the present
publication ont été soit tirés de la CEI 60027, de la publication have either been taken from IEC 60027,
IEC 60417, IEC 60617 and/or IEC 60878, or have
CEI 60417, de la CEI 60617 et/ou de la CEI 60878,
been specifically approved for the purpose of this
soit spécifiquement approuvés aux fins de cette
publication.
publication.
Publications de la CEI établies par le IEC publications prepared by the same
même comité d'études technical committee
The attention of readers is drawn to the end pages of
L'attention du lecteur est attirée sur les listes figurant
this publication which list the IEC publications issued
à la fin de cette publication, qui énumèrent les
by the technical committee which has prepared the
publications de la CEI préparées par le comité
present publication.
d'études qui a établi la présente publication.

INTERNATIONAL
IEC
STANDARD
60874-14-4
QC 910004XX0004
First edition
1997-06
Connectors for optical fibres and cables –
Part 14-4:
Detail specification for fibre optic adaptor
(simplex) type SC for multimode fibre
 IEC 1997 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE P
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

– 2 – 60874-14-4 © IEC:1997(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
––––––––
CONNECTORS FOR OPTICAL FIBRES AND CABLES –
Part 14-4: Detail specification for fibre optic adaptor (simplex)
type SC for multimode fibre
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60874-14-4 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/874/FDIS 86B/1003/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.
The QC number that appears on the front cover of this publication is the specification number
in the IEC Quality Assessment System for Electronic Components (IECQ).
The references to clauses or subclauses of IEC 60874-1 indicated in this part apply to the third
edition of IEC 60874-1.
60874-14-4 © IEC:1997(E) – 3 –
CONNECTORS FOR OPTICAL FIBRES AND CABLES
Part 14-4: Detail specification for fibre optic adaptor (simplex) type SC for
multimode fibre
NATIONAL STANDARDS ORGANIZATION: .
Date: .
DETAIL SPECIFICATION IEC QC 910004XX0004.
FIBRE OPTIC COMPONENT OF ASSESSED QUALITY IN ACCORDANCE WITH
• GENERIC SPECIFICATION: QC 910000 (IEC 60874-1)
• BLANK DETAIL SPECIFICATION: QC 910001 (IEC 60874-1-1)
FIBRE OPTIC ADAPTOR
CLASSIFICATION:
Type: Name: SC
For use in datacom applications as specified in ISO/IEC International Standard 11801:
“Generic cabling for customer premises”
Configuration: plug-adaptor-plug
Coupling: push-pull
Control dimensions:
– Plug: see figures 1, 2 and 3
– Gauge: see figure 4
Variants: see page 8
Climatic category: 10/60/4
Environmental category: 4
Assessment level: A
QUALIFICATION PROCEDURE: Fixed sample procedure
SAFETY WARNING: Take care when handling small diameter optical fibre to prevent puncturing the skin,
especially in the eye area. Direct viewing of the end of an optical fibre when it is propagating energy is not
recommended unless prior assurance is obtained as to the safe energy output level.

– 4 – 60874-14-4 © IEC:1997(E)
Figure 1 – Adaptor mating face dimensions

60874-14-4 © IEC:1997(E) – 5 –
Reference Dimensions Notes
Minimum Maximum
A – – 1
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 5,9 mm
K 0,06 mm 1 mm
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
rS 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°
AB
0,9 mm 1,0 mm
rAC 0,4 mm 0,6 mm radius
AD 0,7 mm 0,8 mm
AE 0,4 mm 0,6 mm
NOTES
1 The connector alignment feature is an alignment sleeve. The gauge
retention force shall be measured with two gauge pins, each inserted to
the middle of the alignment feature. The gauge retention force shall be
from 2,0 N to 5,9 N.
2 Where a tolerance of form is not specified, the limits of the
dimensions for a feature control the form as well as the size.
3 Where interrelated features of size (features shown with a common
axis or centre plane) have no geometric tolerance of location or run out
specified, the limits of the dimensions for a feature control the location
tolerance as well as the size.
4 Where perpendicular features (features shown at right angles) have
no geometric tolerance of orientation or run out specified, the limits of
the dimensions for a feature control the orientation tolerance as well as
the size.
Figure 1 – Adaptor mating face dimensions (continued)

– 6 – 60874-14-4 © IEC:1997(E)
Dimensions
Reference mm Notes
Minimum Maximum
AF 21,5 22,5 1
AG 17,5 18,5
AH 12,6 13,0
AI 9,2 9,4 1
AJ 2,2 2,5
AK 27 27,8
AL 2,8 3,2
AM 14,4 16,4
AN 7,7 8,0
AO 1,7 2,0 2
NOTES
1 The dotted lines indicate an example of the shape of the mounting flange.
The largest portion of the mounting flange shall be within these dimensions.
2 If the adaptor is mounted using this hook, the thickness of the panel shall
be 1,6 mm.
Figure 2 – Adaptor dimensions
60874-14-4 © IEC:1997(E) – 7 –
Dimensions
Reference mm Notes
Minimum Maximum
W 2,4 2,6
X 13,1 13,6
Y 17,9 18,1
Z 9,5 10,0
Figure 3 – Panel piercing and mounting detail
Dimensions
Reference mm Notes
Minimum Maximum
CK 2,4985 2,4995 1
CL 2,8 4,8
CN 7 15
NOTE
1 Surface roughness grade N4 (0,2 μm Ra).
Figure 4 – Dimension of a pin gauge for an adaptor

– 8 – 60874-14-4 © IEC:1997(E)
VARIANT IDENTIFICATION NUMBERS
Number: QC 910X01/0004-ZZZZ
Variant feature
ZZZZ Component name Preferred housing
Housing part material Sleeve material
colour/indicator
1001 Adaptor MMF Plastic Zirconia Beige
1002 Adaptor MMF Plastic Phosphor bronze Beige
1003 Adaptor MMF Metal Zirconia Beige
1004 Adaptor MMF Metal Phosphor bronze Beige
SUPPLEMENTARY INFORMATION
Colour:
1. For MMF: Beige according to RAL 1013.
Component marking:
The name and/or manufacturer’s identification mark may be permanently identified. Figure 5 shows an example
of the location of component marking
Figure 5 – Example of component marking

60874-14-4 © IEC:1997(E) – 9 –
TABLE 1
FIXED SAMPLE TEST SCHEDULE FOR QUALIFICATION APPROVAL
Test sequence Reference IEC 60874-1 n
(IEC 61300)
Group 0
– Visual examination 4.4.1 (3-1) 20
– Dimensions 4.4.2 (3-1)
– Gauge retention force (3-33)
Group 1
– Attenuation 4.4.7 (3-4) 20
Group 2
–Cold 4.5.17 (2-17)
– Dry heat 4.5.18 (2-18) 6
– Damp heat (steady state) 4.5.19 (2-19)
Group 3
– Engagement and separation force 4.4.5 (3-11) 6
– Mechanical endurance 4.5.32 (2-2)
Group 4
–Vibration 4.5.1 (2-1) 4
– Change of temperature (test Nb) 4.5.22 (2-22)
Group 5
– Strength of coupling mechanism 4.5.6 (2-6) 4
NOTES
1 n = sample size (number of plugs).
2 To satisfy the qualification approval requirements of the detail specification there shall be
no failures of any in the sample groups for any test parameter. If a failure does occur this
shall be investigated and the cause of failure identified and corrected. The test which is
affected shall then be repeated using the minimum sample size stated in this detail
specification.
A fully documented test report and supporting data shall be prepared and shall be available
for inspection. Failures and the corrective action taken to eliminate failures shall be
documented and evidence shall be presented to show that the corrective action will have no
detrimental effect on the performance in any of the other tests. Design changes, as opposed
to improvements in quality control, will usually be deemed to necessitate a repeat of the full
qualification programme.
3 Unless otherwise indicated, the test details, measurements and performance
requirements are given in table 4.
4 Only group 1 tests shall be carried out using a reference connector. All other tests shall
be carried out using the samples from the relevant group at random.

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