IEC 60874-19-1:2003

Connectors for optical fibres and cables - Part 19-1: Fibre optic patch cord connector type SC-PC (floating duplex) standard terminated on multimode fibre type A1a, A1b - Detail specification

Defines the requirements and quality assessment procedures for the type SC-PC (floating duplex)fibre optic patch cord connector, standard terminated on multimode fibre type A1a and A1b. The contents of the corrigendum of April 2004 have been included in this copy.

General Information

• Status: Published
• Publication Date: 27-Jan-2003
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 27-Nov-2007

Relations

• Corrected By: IEC 60874-19-1:2003/COR1:2004 - Corrigendum 1 - Connectors for optical fibres and cables - Part 19-1: Fibre optic patch cord connector type SC-PC (floating duplex) standard terminated on multimode fibre type A1a, A1b - Detail specification
• Effective Date: 05-Sep-2023
• Revised: IEC 60874-19-1:2007 - Fibre optic interconnecting devices and passive components - Connectors for optical fibres and cables - Part 19-1: Fibre optic patch cord connector type SC-PC (floating duplex) standard terminated on multimode fibre type A1a, A1b - Detail specification
• Effective Date: 05-Sep-2023
• Revises: IEC 60874-19-1:1999 - Connectors for optical fibres and cables - Part 19-1: Fibre optic patch cord connector type SC-PC (floating duplex) standard terminated on multimode fibre type A1a, A1b - Detail specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
60874-19-1
Second edition
2003-01
Connectors for optical fibres and cables –
Part 19-1:
Fibre optic patch cord connector type SC-PC
(floating duplex) standard terminated on
multimode fibre type A1a, A1b –
Detail specification
Connecteurs pour fibres optiques et câbles –
Partie 19-1:
Connecteur pour câble de liaison de type SC-PC
(duplex flottant) normalisé, terminé sur une fibre
multimodale de types A1a, A1b –
Spécification particulière
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,

edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
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INTERNATIONAL IEC
STANDARD
60874-19-1
Second edition
2003-01
Connectors for optical fibres and cables –
Part 19-1:
Fibre optic patch cord connector type SC-PC
(floating duplex) standard terminated on
multimode fibre type A1a, A1b –
Detail specification
Connecteurs pour fibres optiques et câbles –
Partie 19-1:
Connecteur pour câble de liaison de type SC-PC
(duplex flottant) normalisé, terminé sur une fibre
multimodale de types A1a, A1b –
Spécification particulière
 IEC 2003  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
T
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 60874-19-1  IEC:2003(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

___________
CONNECTORS FOR OPTICAL FIBRES AND CABLES –

Part 19-1: Fibre optic patch cord connector type SC-PC (floating duplex)

standard terminated on multimode fibre type A1a, A1b –

Detail specification
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 specifications, 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 60874-19-1 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 1999. It constitutes a
technical revision.
The text of this standard is based on the following documents:

FDIS Report on voting
86B/1775/FDIS 86B/1826/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 not been drafted in complete accordance with the ISO/IEC Directives,
Part 2.
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
fourth edition of IEC 60874-1.

60874-19-1  IEC:2003(E) – 3 –

The committee has decided that the contents of this publication will remain unchanged
until 2005. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or

• amended.
The contents of the corrigendum of April 2004 have been included in this copy.

– 4 – 60874-19-1  IEC:2003(E)

CONNECTORS FOR OPTICAL FIBRES AND CABLES –

Part 19-1: Fibre optic patch cord connector type SC-PC (floating duplex) standard terminated

on multimode fibre type A1a, A1b – Detail specification

NATIONAL STANDARDS ORGANIZATION: .

Date .

DETAIL SPECIFICATION IEC QC 910004XX0001

FIBRE OPTIC COMPONENT OF ASSESSED QUALITY IN ACCORDANCE WITH

• GENERIC SPECIFICATION: QC 910000 (IEC 60874-1)
• BLANK DETAIL SPECIFICATION: QC 910004 (IEC 60874-1-1)
CONNECTOR SET FOR OPTICAL FIBRES AND CABLES
CLASSIFICATION:
Type: Name: SC (floating duplex)
For use in datacom applications as specified in ISO/IEC International Standard 11801:
Generic cabling for customer premises
and as defined in category C of IEC 61753-1:
Fibre optic interconnecting devices performance standard – Part 1 General and Guidance
Configuration: plug-adaptor-plug
Coupling: push-pull
Control dimensions:
− Plug: see figures 1, 2 and 3
− Adaptor: See IEC 60874-19-3
Arrangement: patchcord arrangement
Style: Fibre retention: as required
Cable retention: as required
Optical coupling: butting
Alignment: resilient sleeve alignment
Variants: see page 9
Climatic category: 10/60/4
Environmental category: 4 (category C of IEC 61753-1)
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.

Applicable fibre cable information:
Core diameter in accordance with IEC 60793-2
Cladding diameter in accordance with IEC 60793-2
Buffer diameter (250 ± 15) μm, (500 ± 30) μm, (900 ± 50) μm
Tension member Aramid strength member
Jacket outer diameter As required per variant

60874-19-1  IEC:2003(E) – 5 –

Mechanical reference plane
H
I J
K
R
Q
G
A
cBC
Ferrule
F
L M
rS
A
De-latch housing
B
Partial cross-section A-A
V
View from B direction
IEC  001/03
Figure 1 – Plug mating face dimensions
Dimensions
mm
Reference Notes
Minimum Maximum
A 2,497 2,500 Diameter
B 4,80 4,90 Diameter
C 6,80 7,40
D 4,90 5,30
E 6,70 6,80
F 19° 23°
G
25° 35°
H 1, 2
7,15 7,50
I
0,80 1,20
J
5,30 5,50
K 3
–0,10 0,05
D
E
∅A
T
∅B
U
C
P
N
O
DB
– 6 – 60874-19-1  IEC:2003(E)

L 2,11 2,50
M 2,00 2,80
N 6,60 6,80
O 1,60 1,80
P 8,89 8,99
Q 0,80 1,00
R 7,29 7,39
rS 0,80 0,90 Radius
T 4,05 4,15
U 5,40 5,60
V 0 0,50
BC 0 0,50 Chamfer
DB 12,25 13,15 7
NOTE 1 Ferrule compression force shall be from 7,8 N to 11,8 N, when the ferrule is
compressed to a point where H is 7 mm ± 0,1 mm.
NOTE 2 This value shows the dimension after the ferrule is polished and in the unmated
condition.
NOTE 3 The negative dimension refers to the fact that the position of the inside bottom plane
is left-direction relative to the plane defined as mechanical reference plane.
NOTE 4 Where a tolerance of form is not specified, the limits of the dimensions for a feature
control the form as well as the size.
NOTE 5 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.
NOTE 6 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.
NOTE 7 Plugs shall be capable of floating between the DB maximum and DB minimum.
Figure 1 – Plug mating face dimensions (concluded)

60874-19-1  IEC:2003(E) – 7 –

∅BG
Fibre end-face
A
Note 3
Detail A
BI rBF
IEC  002/03
Allowable undercut versus ferrule endface radius
7 8 9 1011 1213 1415 161718 19 202122 2324 25
Ferrule Endface Radius BF  mm
IEC  003/03
3 2
The value of the undercut, BK, is BK = – 0,02BF + 1,3BF – 31BF + 325 from 10 mm ≤ BF ≤ 25 mm.
For 7 ≤ BF ≤ 10 the value of under cut is 125 nm.
Dimensions
mm
Reference Notes
Minimum Maximum
rBF 7,00 25,00 1, radius
BG 1,90 2,26 Diameter 2
BI
25°    35°
BK 4, see curve
See graph
–0,0001
NOTE 1 Eccentricity of a spherical polished ferrule end face is less than
50 μm.
NOTE 2 This value is applicable for variants as per variant table in Figure 3.
NOTE 3 Break edge.
NOTE 4 The negative dimension refers to the fibre protrusion.
Dimension BK shall be measured according to IEC 61300-3-23.
Figure 2 – Ferrule end face geometry after termination
Undercut BK  nm
BK
– 8 – 60874-19-1  IEC:2003(E)

∅BE
BD
IEC  004/03
Dimensions
mm
Reference Notes
Minimum Maximum
BD 60
BE 2,20 1
BE 2,60 2
BE 2,90 3
BE 3,20 4
NOTE 1 This value is applicable to the variant number –1001.
NOTE 2 This value is applicable to the variant number –1002.
NOTE 3 This value is applicable to the variant number –1003.
NOTE 4 This value is applicable to the variant number –1004.
Figure 3 – Plug dimension
60874-19-1  IEC:2003(E) – 9 –

VARIANT IDENTIFICATION NUMBERS

NUMBER: XXXXXXXXXXXX
Variant Component name Variant feature

Applicable cable jacket diameter Ferrule material

mm
1001 Plug 2,00 Zirconia
1002 Plug 2,40 Zirconia
1003 Plug 2,70 Zirconia
1004 Plug 3,00 Zirconia
SUPPLEMENTARY INFORMATION
Colour:
Colour of the de-latch housing and boot shall be beige, according to: RAL 1013.
Component marking:
The name and/or manufacturer’s identification mark may be permanently identified. Figure 4 shows an example of
the location of the component marking.
Manufacturer's identification mark

IEC  005/03
Figure 4 – Example of component marking

– 10 – 60874-19-1  IEC:2003(E)

Table 1 – Fixed sample test schedule for qualification approval

n
Test sequence Reference IEC 61300

Group 0
− Visual examination 3-1 20
3-1
− Dimensions
Group 1
3-4 20
− Attenuation
3-34
− Attenuation (random mate)
3-6
− Return loss (random mate)
Group 2
2-17
− Cold
2-18 6
− Dry heat
2-19
− Damp heat (steady state)
Group 3
− Impact (method A) 2-12
3-11 6
− Engagement and separation force
2-2
− Mating durability
Group 4
− Vibration 2-1 4
2-22
− Change of temperature
Group 5
2-6 4
− Tensile strength of coupling mechanism
2-4
− Fibre/cable retention
2-42
− Static side load
NOTE 1 n = sample size (number of plugs).
NOTE 2 To satisfy the qualification approval requirements of the detail specification there shall be no failures 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
...