Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 34: Type URM connector family

IEC 61754-34:2016 defines the standard interface dimensions for the type URM family of connectors. Keywords: interface dimensions for type URM connectors

Dispositifs d'interconnexion et composants passifs fibroniques - Interfaces de connecteurs fibroniques - Partie 34: Famille de connecteurs de type URM

L'IEC 61754-34:2016 définit les dimensions des interfaces normalisées pour la famille de connecteurs de type URM. Mots clés: dimensions des interfaces pour de connecteurs de type URM

General Information

Status
Published
Publication Date
25-Sep-2016
Current Stage
PPUB - Publication issued
Completion Date
26-Sep-2016
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IEC 61754-34
Edition 1.0 2016-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces –
Part 34: Type URM connector family
Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces de
connecteurs fibroniques –
Partie 34: Famille de connecteurs de type URM
IEC 61754-34:2016-09(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61754-34
Edition 1.0 2016-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces –
Part 34: Type URM connector family
Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces de
connecteurs fibroniques –
Partie 34: Famille de connecteurs de type URM
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-3658-1

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61754-34:2016 © IEC 2016
CONTENTS

FOREWORD ......................................................................................................................... 3

INTRODUCTION ................................................................................................................... 5

1 Scope ............................................................................................................................ 6

2 Normative references..................................................................................................... 6

3 Terms and definitions .................................................................................................... 6

4 Description .................................................................................................................... 6

5 Interfaces ...................................................................................................................... 6

6 Two-way plug optical interface ....................................................................................... 7

7 Eight-way plug optical interface .................................................................................... 13

8 Ferrule grade dimensions ............................................................................................ 19

9 Two-way adaptor interface ........................................................................................... 19

10 Eight-way adaptor interface ......................................................................................... 22

11 Pin gauge for adaptor .................................................................................................. 26

Annex A (informative) Additional adaptor dimensional information ....................................... 28

Bibliography ....................................................................................................................... 30

Figure 1 – Two-way plug connector interface ......................................................................... 9

Figure 2 – Two-way plug connector ferrules ........................................................................ 10

Figure 3 – Two-way plug connector APC angle .................................................................... 11

Figure 4 – Two-way plug connector interface alignment ....................................................... 11

Figure 5 – Eight-way plug connector interface ..................................................................... 15

Figure 6 – Detail 01 of Figure 5 – expanded view drawings not to scale ............................... 16

Figure 7 – Eight-way plug connector interface APC angle .................................................... 17

Figure 8 – Eight-way plug interface alignment ..................................................................... 17

Figure 9 – Two-way adaptor interface .................................................................................. 21

Figure 10 – Eight-way adaptor interface .............................................................................. 25

Figure 11 – Pin gauge for adaptor ....................................................................................... 27

Figure A.1 – Outline dimensions – two-way adaptor ............................................................. 28

Figure A.2 – Outline dimensions – eight-way adaptor ........................................................... 29

Table 1 – Intermateability between plugs and adaptors interfaces defined in this

document ............................................................................................................................. 7

Table 2 – Dimensions of the two-way plug connector interface ............................................. 12

Table 3 – Dimensions of the eight-way plug connector interface .......................................... 18

Table 4 – Plug connector interface – ferrule grade ............................................................... 19

Table 5 – Dimensions of the two-way adaptor interface ........................................................ 22

Table 6 – Dimensions of the eight-way adaptor interface ..................................................... 26

Table 7 – Dimensions of the pin gauge ................................................................................ 27

Table A.1 – Outline dimensions – two-way adaptor .............................................................. 28

Table A.2 – Outline dimensions – eight-way adaptor ............................................................ 29

---------------------- Page: 4 ----------------------
IEC 61754-34:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –
Part 34: Type URM 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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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

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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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6) All users should ensure that they have the latest edition of this publication.

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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 61754-34 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:
CDV Report on voting
86B/3966/CDV 86B/3999A/RVC

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.

---------------------- Page: 5 ----------------------
– 4 – IEC 61754-34:2016 © IEC 2016

A list of all parts in the IEC 61754 series, published under the general title Fibre optic

interconnecting devices and passive components – Fibre optic connector interfaces, can be

found on the IEC website.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC website 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.
---------------------- Page: 6 ----------------------
IEC 61754-34:2016 © IEC 2016 – 5 –
INTRODUCTION

The International Electrotechnical Commission (IEC) draws attention to the fact that it is

claimed that compliance with this document may involve the use of a patent concerning

IEC 61754-34.

IEC takes no position concerning the evidence, validity and scope of this patent right.

The holder of this patent right has assured the IEC that he/she is willing to negotiate licences

under reasonable and non-discriminatory terms and conditions with applicants throughout the

world. In this respect, the statement of the holder of this patent right is registered with IEC.

Information may be obtained from:
EUROMICRON Werkzeuge GmbH
Zur Dornheck 32-34
35764 Sinn-Fleisbach
Germany

Attention is drawn to the possibility that some of the elements of this document may be the

subject of patent rights other than those identified above. IEC shall not be held responsible for

identifying any or all such patent rights.

ISO (www.iso.org/patents) and IEC (http://www.iec.ch/tctools/patent_decl.htm) maintain on-

line data bases of patents relevant to their standards. Users are encouraged to consult the

data bases for the most up to date information concerning patents.
---------------------- Page: 7 ----------------------
– 6 – IEC 61754-34:2016 © IEC 2016
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –
Part 34: Type URM connector family
1 Scope

This part of IEC 61754 defines the standard interface dimensions for the type URM family of

connectors.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.

IEC 60794-2-50, Optical fibre cables – Part 2-50: Indoor cables – Family specification for

simplex and duplex cables for use in terminated cable assemblies

IEC 61754-1, Fibre optic interconnecting devices and passive components – Fibre optic

connector interfaces – Part 1: General and guidance

IEC 61755-3 (all parts), Fibre optic interconnecting devices and passive components –

Connector optical interfaces
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
– IEC Electropedia: available at http://www.electropedia.org/
– ISO Online browsing platform: available at http://www.iso.org/obp
4 Description

The parent connector for the type URM connector family is a duplex connector set of

plug/adaptor/plug configuration which is characterized by a 1,25 mm nominal diameter ferrule.

The plug connector includes two spring loaded ferrules in the direction of the optical axis. The

plug also has a single male key, which may be used to orientate and limit the relative position

between the connector and the adaptor to which it is mated. The optical alignment mechanism

of the connectors is a resilient sleeve. Drawings and dimensions provided consist of those

minimum features that are functionally critical during the mating and unmating sequences of

the plug with its adaptor counterpart component.
5 Interfaces
General requirements defined in IEC 61754-1 shall be used for this document.
---------------------- Page: 8 ----------------------
IEC 61754-34:2016 © IEC 2016 – 7 –

The subsequent clauses define the standard interfaces for the type URM connector series.

This document contains the following standard interfaces:
Interface 34-1: two-way plug connector interface – PC
Interface 34-2: two-way adaptor connector interface
Interface 34-3: two-way plug connector interface – APC 8°
Interface 34-4: eight-way plug connector interface – PC
Interface 34-5: eight-way adaptor connector interface
Interface 34-6: eight-way plug connector interface – APC 8°
The intermateability between plugs and adaptors is given in Table 1.

The interface dimensions for adaptors and appropriate fibre management systems are given

for information in Annex A.
The following standardized interfaces are intermateable.
Table 1 – Intermateability between plugs and adaptors
interfaces defined in this document
Plug interfaces Adaptor interfaces
34-2 34-5
34-1 mate mate
34-3 mate mate
34-4 not mate mate
34-6 not mate mate
6 Two-way plug optical interface

Two-way plug optical interface dimensions are shown in Figure 1, Figure 2, Figure 3 and

Figure 4 as well as in Table 2.
---------------------- Page: 9 ----------------------
– 8 – IEC 61754-34:2016 © IEC 2016
Optical reference plane
H1 H2
Optical datum
target
Mechanical reference plane
IEC
a) Top view
IEC
b) Side view
C C
IEC
c) Front view
---------------------- Page: 10 ----------------------
IEC 61754-34:2016 © IEC 2016 – 9 –
Detail 01
IEC
d) Section C-C
Mechanical reference plane
IEC
e) Detail 01
Key to dimensions given in Table 2.
Figure 1 – Two-way plug connector interface

The plug of interface 34-1 has a ferrule with a spherically polished endface (PC) shown in

Detail 01 of Figure 2a) and Figure 2b). The plug of interface 34-3 has a ferrule with a

spherically polished angled endface shown in Detail 01 of Figure 2a) and Figure 2c).

---------------------- Page: 11 ----------------------
– 10 – IEC 61754-34:2016 © IEC 2016
Detail 01
IEC
a) Top view
No sharp
edges
IEC
b) Detail 01 for PC ferrule endface geometry
No sharp
edges
IEC
c) Detail 01 for APC polish conical ferrule
Key to dimensions given in Table 2.
Figure 2 – Two-way plug connector ferrules

Refer to IEC 61755-3 series for information on the endface geometry requirements of PC and

APC interfaces, respectively.

Figure 3 shows details of the APC ferrule endface geometry and Figure 4 shows alignment

characteristics of the connector.
---------------------- Page: 12 ----------------------
IEC 61754-34:2016 © IEC 2016 – 11 –
Detail 01
IEC
a) Top view
Angled PC
reference plane IEC
b) Detail 01
Key to dimensions given in Table 2.
Figure 3 – Two-way plug connector APC angle
Plane C
Plane D
IEC
Key to dimensions given in Table 2.
Figure 4 – Two-way plug connector interface alignment
---------------------- Page: 13 ----------------------
– 12 – IEC 61754-34:2016 © IEC 2016
Table 2 – Dimensions of the two-way plug connector interface
Dimensions
Reference Remarks
Minimum Maximum
F 8,30 mm 8,55 mm
G 4,80 mm 5,00 mm
a, b
H1 5,20 mm 5,30 mm
H2 4,80 mm 4,90 mm
c, d
I 0,40 mm 0,90 mm
J 1,25 mm
K ferrule diameter, Table 4
L 2,80 mm nominal dimension
M 5,70 mm 5,80 mm
N 6,40 mm 6,60 mm
O 7,60 mm 7,85 mm
P 3,60 mm 3,80 mm
S 1,80 mm 2,10 mm
T 3,20 mm 3,80 mm
U 1,40 mm 1,60 mm
V 3,80 mm 4,10 mm
W1 5° 30°
W2 0° 45°
X 1,90 mm 2,10 mm diameter
Y 8,90 mm 9,40 mm
Z 5,90 mm 6,70 mm
AA 4,60 mm 4,90 mm
AE 0,60 mm 0,85 mm
AF 5,00 mm 30,00 mm
AG 30° 45°
AH 0,60 mm 0,85 mm
AI 5,00 mm 12,00 mm
AM 90° nominal dimension
AN 8° nominal dimension
HH 0,40 mm 0,60 mm
JJ 1,90 mm 2,70 mm

Dimension H1 is given for a plug endface when not mated. The ferrule is movable by a certain axial

compression force, with direct contacting endface, and therefore dimension H1 is variable. Ferrule

compression force shall be 5,0 N to 6,0 N when the position of the optical datum target, dimension H1, is

moved to the range from 4,8 mm to 5,1 mm. Forces are for buffered fibre only; different cord constructions

can result in higher forces (see IEC 60794-2-50).

These dimensional requirements apply to the finished ferrule after all polishing procedures have been

completed.

The outer housing is movable to the left and to the right. These dimensions are given when the release case

has been moved to the leftmost position.

When the outer housing has been moved in the rightmost position, the inner housing shall protrude from the

outer housing.

Dimension AM is defined as an angle between two planes. One plane, plane C, passes through the axis

parallel to the axes of the ferrules and the axis of symmetry of the key of the angled endface plug connector.

The other plane, plane D, passes through the axes of the ferrules and the plane normal to the angled PC

reference plane.
---------------------- Page: 14 ----------------------
IEC 61754-34:2016 © IEC 2016 – 13 –
7 Eight-way plug optical interface

Eight-way plug optical interface dimensions are shown in Figure 5, Figure 6, Figure 7 and

Figure 8 as well as in Table 3.
IEC
a) Top view
Detail 01
IEC
b) Front view
---------------------- Page: 15 ----------------------
– 14 – IEC 61754-34:2016 © IEC 2016
Optical reference
plane
H1 H2
Optical datum
target
IEC
c) Side view
Detail 02
IEC
d) Section C-C
---------------------- Page: 16 ----------------------
IEC 61754-34:2016 © IEC 2016 – 15 –
IEC
e) Detail 01
Mechanical reference
plane
IEC
f) Detail 02
Key to dimensions given in Table 3.
Figure 5 – Eight-way plug connector interface

The plug of interface 34-4 has a ferrule with a spherically polished endface (PC) shown in

Detail 01 of Figure 6a) and in Figure 6b). The plug of interface 34-6 has a ferrule with a

spherically polished angled endface shown in Detail 01 of Figure 6a) and in Figure 6c).

---------------------- Page: 17 ----------------------
– 16 – IEC 61754-34:2016 © IEC 2016
Detail 01
IEC
a) Top view
No sharp
edges
IEC
b) Detail 01 for PC ferrule endface geometry
No sharp
edges
IEC
c) Detail 01 for APC polish conical ferrule
Key to dimensions given in Table 3.
Figure 6 – Detail 01 of Figure 5 – expanded view drawings not to scale

Refer to IEC 61755-3 series for information on the endface geometry requirements of PC and

APC interfaces, respectively.

Figure 7 shows details of the APC ferrule endface geometry and Figure 8 shows alignment

characteristics of the connector.
---------------------- Page: 18 ----------------------
IEC 61754-34:2016 © IEC 2016 – 17 –
Detail 01
IEC
a) Top view
Angled PC
reference plane IEC
b) Detail 01
Key to dimensions given in Table 3.
Figure 7 – Eight-way plug connector interface APC angle
Plane C
Plane D
IEC
Key to dimensions given in Table 3.
Figure 8 – Eight-way plug interface alignment
---------------------- Page: 19 ----------------------
– 18 – IEC 61754-34:2016 © IEC 2016
Table 3 – Dimensions of the eight-way plug connector interface
Dimensions
Reference Remarks
Minimum Maximum
F 8,30 mm 8,55 mm
G 4,80 mm 5,00 mm
a, b
H1 5,20 mm 5,30 mm
H2 4,80 mm 4,90 mm
c, d
I 0,40 mm 0,90 mm
J 1,25 mm
K ferrule diameter, Table 4
L 2,80 mm nominal dimension
M 5,70 mm 5,80 mm
N 6,40 mm 6,60 mm
O 7,60 mm 7,85 mm
P 3,60 mm 3,80 mm
S 1,80 mm 2,10 mm
T 3,20 mm 3,80 mm
U 1,40 mm 1,60 mm
V 3,80 mm 4,10 mm
W1 5° 30°
W2 0° 45°
X 1,90 mm 2,10 mm diameter
Y 8,90 mm 9,40 mm
Z 5,90 mm 6,70 mm
AA 4,60 mm 4,90 mm
AE 0,60 mm 0,85 mm
AF 5,00 mm 30,00 mm
AG 30° 45°
AH 0,60 mm 0,85 mm
AI 5,00 mm 12,00 mm
AM 90° nominal dimension
AN 8° nominal dimension
EE 23,80 mm 24,00 mm
HH 0,40 mm 0,60 mm
JJ 1,90 mm 2,70 mm
LL 6,40 mm

Dimension H1 is given for a plug endface when not mated. The ferrule is movable by a certain axial

compression force, with direct contacting endface, and therefore dimension H1 is variable. Ferrule

compression force shall be 5,0 N to 6,0 N when the position of the optical datum target, dimension H1, is

moved to the range from 4,8 mm to 5,1 mm. Forces are for buffered fibre only; different cord constructions

can result in higher forces (see IEC 60794-2-50).

These dimensional requirements apply to the finished ferrule after all polishing procedures have been

completed.

The outer housing shall be movable to the left and to the right. These dimensions are given when the release

case has been moved to the farthest left position.

When the outer housing has been moved in the farthest right position, the inner housing shall protrude from

the outer housing.

Dimension AM is defined as an angle between two planes. One plane, plane C, passes through the axis

parallel to the axes of the ferrules and the axis of symmetry of the key of the angled endface plug connector.

The other plane, plane D, passes through the axes of the ferrules and the plane normal to the angled PC

reference plane.
---------------------- Page: 20 ----------------------
IEC 61754-34:2016 © IEC 2016 – 19 –
8 Ferrule grade dimensions
Dimensions of the ferrule grades for diameter K are given in Table 4.
Table 4 – Plug connector interface – ferrule grade
Diameter K
Grade Remarks
Minimum Maximum
1 1,248 5 1,249 5
2 1,248 3 1,249 5
3 1,246 7 1,249 5

The ferrule material is zirconia ceramic. Alternative materials that have directly compatible material properties

with zirconia may be used for the ferrule, but the endface performance requirements shall be met under all

conditions.
9 Two-way adaptor interface

Two-way adaptor optical interface dimensions are shown in Figure 9 as well as in Table 5.

IEC
a) Top view
---------------------- Page: 21 ----------------------
– 20 – IEC 617
...

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