IEC 61754-7-3:2019

Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 7-3: Type MPO connector family - Two fibre rows 16 fibre wide

IEC 61754-7-3: 2019 defines the standard interface dimensions for type MPO family of connectors with two rows of 16 fibres.
Keywords: interface dimensions for type MPO connectors

Dispositifs d'interconnexion et composants passifs à fibres optiques – Interfaces de connecteurs à fibres optiques – Partie 7-3: Famille de connecteurs de type MPO – Deux rangées de 16 fibres

IEC 61754-7-3: 2019 définit les dimensions d’interface normalisées pour la famille de connecteurs de type MPO comportant deux rangées de 16 fibres.
Mots clés : dimensions d’interface pour la connecteurs de type MPO

General Information

• Status: Published
• Publication Date: 04-Apr-2019
• 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: 05-Apr-2019
• Completion Date: 26-Apr-2019

Overview

IEC 61754-7-3:2019 is an international standard published by the International Electrotechnical Commission (IEC) that specifies the interface dimensions for the Type MPO (Multi-fibre Push-On) connector family featuring two rows of 16 fibres. This document is part of the IEC 61754 series, which sets the foundation for global interoperability and consistency in fibre optic interconnecting devices and passive component interfaces.

MPO connectors are essential components in fibre optic networks, supporting high-density interconnections with efficient data management and scalable performance. By specifying standardized interface dimensions, IEC 61754-7-3 enhances compatibility, quality, and reliability of MPO connectors in a range of network infrastructures.

Key Topics

• MPO Connector Interface Dimensions: Defines detailed dimensional requirements for MPO connectors with 32 fibres arranged in two rows of 16.
• Connector Variants:
  • Female plug (without alignment pins)
  • Male plug (with alignment pins)
  • Adaptor interfaces: opposed keyway and aligned keyway configurations
  • Active device receptacle interfaces (angled and flat)
• Plug and Adaptor Types:
  • Down-angled and up-angled variants for both male and female plugs
  • Flat interface options for both plug types
• Intermateability: Sets rules for mating combinations between plugs, adaptors, and active device receptacles for correct assembly and reliable performance.
• Identification and Marking: Requires clear marking to distinguish between angled and flat interfaces, ensuring correct installation and maintenance.
• Mechanical Strength: Specifies mating/unmating forces and retention requirements for pins and plug latching mechanisms.

Applications

The standardization of MPO connector interface dimensions as outlined in IEC 61754-7-3 delivers significant practical value:

• Data Centers and High-Density Optical Networks: Enables rapid deployment and maintenance of high-fibre-count links for backbone and cross-connect applications.
• Telecommunications and Enterprise Networks: Ensures reliable high-speed data transmission in environments requiring robust, standardized connectors.
• Equipment Manufacturing and System Integration: Offers equipment designers and suppliers a consistent basis for product development, system design, and procurement processes.
• Interoperability and Global Sourcing: Facilitates multi-vendor interoperability and simplifies global supply chains through standardization of connector interface dimensions for Type MPO.
• Test and Measurement: Supports test equipment manufacturers and installers in evaluating and certifying fibre optic installations for compliance with recognized international standards.

Related Standards

IEC 61754-7-3 is part of a broader series dedicated to fibre optic connector interfaces. Relevant and related standards include:

• IEC 61754 Series: Covers various fibre optic connector interfaces, promoting harmonized global specifications.
• IEC 61754-7: Original specification for MPO connector interfaces and single-row variants.
• IEC 61754-7-1: Addresses the interface for MPO connectors with one row of 12 fibres.
• General IEC 61754 Standards: Detail interfaces for various other connector types (SC, LC, FC, etc.), supporting comprehensive fibre optic infrastructure planning.
• IEC Electropedia: Provides terminology related to fibre optic components and technologies.

Keywords: IEC 61754-7-3, interface dimensions for type MPO connectors, fibre optic connector interfaces, two fibre rows 16 fibre wide, MPO connector family, international standard, multi-fibre connector, high-density fibre optic interfaces.

Standards Content (Sample)

IEC 61754-7-3 ®
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces –
Part 7-3: Type MPO connector family –Two fibre rows 16 fibre wide

Dispositifs d'interconnexion et composants passifs àfibres optiques – Interfaces
de connecteurs à fibres optiques –
Partie 7-3: Famille de connecteurs de type MPO – Deux rangées de 16 fibres

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IEC 61754-7-3 ®
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic

connector interfaces –
Part 7-3: Type MPO connector family –Two fibre rows 16 fibre wide

Dispositifs d'interconnexion et composants passifs àfibres optiques – Interfaces

de connecteurs à fibres optiques –

Partie 7-3: Famille de connecteurs de type MPO – Deux rangées de 16 fibres

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-6714-1

– 2 – IEC 61754-7-3:2019 © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Description . 6
5 Interfaces . 7

Figure 1 – MPO connector configurations . 7
Figure 2 – Optical datum target location diagrams . 8
Figure 3 – Gauge pin . 8
Figure 4 – Gauge for plug . 9
Figure 5 – MPO female plug, down-angled interface . 10
Figure 6 – MPO female plug, up-angled interface . 10
Figure 7 – MPO male plug, down-angled interface . 12
Figure 8 – MPO male plug, up-angled interface . 13
Figure 9 – MPO female plug, flat interface . 15
Figure 10 – MPO male plug, flat interface . 17
Figure 11 – MPO adaptor interface, opposed keyway configuration . 19
Figure 12 – MPO adaptor interface, aligned keyway configuration . 21
Figure 13 – MPO active device receptacle, angled interface . 23
Figure 14 – MPO active device receptacle, flat interface . 25

Table 1 – Intermateability between plugs and adaptors/housings/receptacles . 7
Table 2 – Dimensions of the gauge pin . 8
Table 3 – Dimensionsof the gauge for plug . 9
Table 4 – Dimensions of the MPO female plug, down- or up-angled interface . 11
Table 5 – Dimensions of the MPO male plug, down- or up-angled interface . 13
Table 6 – Dimensions of the MPO female plug, flat interface . 16
Table 7 – Dimensions of the MPO male plug, flat interface . 18
Table 8 – Dimensions of the MPO adaptor interface, opposed keyway configuration . 20
Table 9 – Dimensions of the MPO adaptor interface, aligned keyway configuration . 22
Table 10 – Dimensions of the MPO active device receptacle, angled interface . 24
Table 11 – Dimensions of the MPO active device receptacle, flat interface . 26

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –

Part 7-3: Type MPO connector family –
Two fibre rows 16 fibre wide
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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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 61754-7-3 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86B/4176/FDIS 86B/4190/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 61754-7-3:2019 © IEC 2019
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 document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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 patents concerning MPO connectors.
The IEC takes no position concerning the evidence, validity and scope of this patent right.
The holders of these patent rights have assured the IEC that they are willing to negotiate
licences under reasonable and non-discriminatory terms and conditions with applicants
throughout the world. In this respect, the statement of the holders of these patent rights is
registered with the IEC. Information may be obtained from:
Intellectual Property Department,
NTT Nippon Telegraph and Telephone Corporation,
3-19-2, Nishishinjuku, Shinjuku-ku
JP – Tokyo 163-19
Assistant Secretary
Laura Thomas
CommScope, Inc. of North Carolina
Hickory, North Carolina, USA
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://patents.iec.ch) 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.

– 6 – IEC 61754-7-3:2019 © IEC 2019
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –

Part 7-3: Type MPO connector family –
Two fibre rows 16 fibre wide
1 Scope
This part of IEC 61754 defines the standard interface dimensions for type MPO family of
connectors with two rows of 16 fibres.
2 Normative references
There are no normative references in this document.
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 type MPO connector family is a multiway plug characterized by a
rectangular ferrule normally 6,4 mm × 2,5 mm which utilizes two pins of 0,55 mm diameter as
its alignment. The variant in this document provides a joint of 32 fibres by arraying them
between two pin-positioning holes in the ferrule in a two-layer (two-row) arrangement. The
connector includes a push-pull coupling mechanism and a ferrule spring loaded in the direction
of the optical axis. The connector 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.
Connector interfaces are configured using a female plug without pins, a male plug with pins
fixed and an adaptor as shown in Figure 1. The female plug is intermateable with the male plug.
There are two angled-interface plugs, one called down-angled and the other up-angled. They
are defined for both male and female plugs. The up and down descriptors refer to the tilt
direction of the ferrule’s angled end-face relative to the fibre axis when looking toward the end-
face with the plug’s key feature on the top. For down-angled plugs, the angled surface faces
slightly downward. For up-angled plugs, the angled surface faces slightly upward. These
different angles affect intermateability for the two adaptor types. An opposed keyway adaptor
mates two plugs with the keys in opposite orientations, for example one side keyway-up and
the other keyway-down. In contrast, an aligned keyway adaptor mates two plugs with the keys
at the same orientation. When using an opposed keyway adaptor with angled interfaces, two
down-angled plugs or two up-angled plugs shall be connected. For aligned keyway adaptors
with angled interfaces, one down-angled plug and one up-angled plug shall be connected.
Additionally, the female plug interface is intermateable with the active device receptacle.

5 Interfaces
This document contains the following standard interfaces:
Interface IEC 61754-7-3-1: MPO female plug, down-angled interface for 32 fibres
Interface IEC 61754-7-3-2:  MPO male plug, down-angled interface for 32 fibres
Interface IEC 61754-7-3-3: MPO female plug, up-angled interface for 32 fibres
Interface IEC 61754-7-3-4: MPO male plug, up-angled interface for 32 fibres
Interface IEC 61754-7-3-5: MPO female plug, flat interface for 32 fibres
Interface IEC 61754-7-3-6: MPO male plug, flat interface for 32 fibres
Interface IEC 61754-7-3-7: MPO adaptor interface – Opposed keyway configuration
Interface IEC 61754-7-3-8: MPO adaptor interface – Aligned keyway configuration
Interface IEC 61754-7-3-9: MPO active device receptacle, angled interface for 32 fibres
Interface IEC 61754-7-3-10: MPO active device receptacle, flat interface for 32 fibres
The interfaces are intermateable according to Table 1.
Table 1 – Intermateability between plugs and adaptors/housings/receptacles
Female plugs Adaptors/housings/receptacles Male plugs
IEC 61754-7-3-1 IEC 61754-7-3-7 IEC 61754-7-3-2
IEC 61754-7-3-1 IEC 61754-7-3-8 IEC 61754-7-3-4
IEC 61754-7-3-3 IEC 61754-7-3-8 IEC 61754-7-3-2
IEC 61754-7-3-5 IEC 61754-7-3-7 or 61754-7-3-8 IEC 61754-7-3-6
IEC 61754-7-3-1 IEC 61754-7-3-9 N/A
IEC 61754-7-3-5 IEC 61754-7-3-10 N/A

Figure 1 shows MPO connector configurations.

Figure 1 – MPO connector configurations
Figure 2 shows optical datum target location diagrams. Figure 3 shows the gauge pin and
dimensions are given in Table 2.

– 8 – IEC 61754-7-3:2019 © IEC 2019
Dimensions in millimetres
Figure 2 – Optical datum target location diagrams

Figure 3 – Gauge pin
Table 2 – Dimensions of the gauge pin
Dimensions
mm
Reference
Minimum Maximum
0,548 5 0,549 0
A
10,8 11,2
B
0,2 0,4
BA
0,2 0,5
BB
6,0 –
BC
Surface roughness R = 0,1 µm for the length of dimension BC.
z
Figure 4 shows gauge for plug and its dimensions are given in Table 3.

Figure 4 – Gauge for plug
Table 3 – Dimensionsof the gauge for plug
Reference Dimensions
mm
Minimum Maximum
0,548 5 0,549 0
A
5,299 5 5,300 5
C
6,3 6,5
D
2,4 2,5
U
0,2 0,4
BA
0,2 0,5
BB
6,0 6,5
BC
For two pins, surface roughness R = 0,1 µm.
z
Figures 5 and 6 show the down-angled and up-angled interface of the MPO female plug. Table
4 gives the dimensions of the down- or up-angled interfaces of the MPO female plug.

– 10 – IEC 61754-7-3:2019 © IEC 2019

Figure 5 – MPO female plug, down-angled interface

Figure 6 – MPO female plug, up-angled interface

Table 4 – Dimensions of the MPO female plug, down- or up-angled interface
Dimensions
mm (unless otherwise noted)
Reference
Minimum Maximum
a
0,549 0,551
A
b
5,297 5,303
C
D 6,3 6,5
c
6,7 –
D1
E 8,34 8,54
F 9,49 9,59
G 10,85 11,05
H 12,19 12,59
d,e
8,8 9,2
I
J 7,9 8,1
K 1,4 –
f,g
0,2 0,8
L
M 2,4 2,6
N 2,8 3,0
O 4,89 4,99
P 5,39 5,49
Q 5,7 –
R – 7,7
S 2,2 2,3
T – 0,6
U 2,4 2,5
c
2,7 –
U1
AA 42° 45°
AB – 45°
AC – 45°
h,i
7,5° 8,5°
AD
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
Each pin-hole shall accept a gauge pin as shown in Figure 3 to a depth of 5,5 mm with a maximum force of 1,7 N.
In addition, two pin-holes of a plug shall accept a gauge as shown in Figure 4 to a depth of 5,5 mm with a
maximum force of 3,4 N.
b
Dimension C is defined as the distance between two pin-hole centres.
c
Dimensions D1 and U1 are defined only at the end of the connector as shown.
d
Dimension I is given for a fibre end face centre of a plug end when not mated. It is noticed that a ferrule is
movable by a certain axial compression force, and therefore dimension I is variable. Ferrule compression force
shall be 18,0 N to 22,0 N when the position of the fibre end face from datum Z is in the range of 8,2 mm to
8,4 mm.
e
Dimension I is measured at the centre line between the two pin-hole centres.
f
The coupling sleeve shall be movable by a certain axial compression force. Dimension L is given for a coupling
sleeve end when not mated. Coupling sleeve compression force shall be 2,9 N to 6,9 N when the position of
the coupling sleeve end face from datum Z is in the range of 0 mm to 0,1 mm to the right or to the left of datum
Z.
g
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve. When the
coupling sleeve is moved for unlocking, the position of the coupling sleeve end face shall be larger than 2,0 mm
in the left direction from datum Z.
h
The down-angled and up-angled plugs shall be clearly marked to distinguish them from each other and flat
interfaces through the use of colour, labelling, or other appropriate identification method. This identification
method shall be visible when the plug is in the mated or unmated condition.
i
Since angled MPO connectors require a Y-offset of the fibre holes in relation to the guide pin holes, and the
Y-offset is referenced from the epoxy window of the ferrule, the angle shall be polished as a down-angle from
the epoxy window. The orientation of the ferrule epoxy window may be reversed in the MPO connector to
produce the up-angle variant.
– 12 – IEC 61754-7-3:2019 © IEC 2019

Figures 7 and 8 show the down-angled and up-angled interface of the MPO male plug.
Table 5 gives the dimensions of the down- or up-angled interfaces of the MPO male plug.

Figure 7 – MPO male plug, down-angled interface

Figure 8 – MPO male plug, up-angled interface
Table 5 – Dimensions of the MPO male plug, down- or up-angled interface
Dimensions
mm (unless otherwise noted)
Reference
Minimum Maximum
a
A 0,547 0,549
b
5,297 5,303
C
D 6,3 6,5
c
6,7 –
D1
E 8,34 8,54
F 9,49 9,59
G 10,85 11,05
H 12,19 12,59
d,e
8,8 9,2
I
J 7,9 8,1
K 1,4 –
f,g
0,2 0,8
L
M 2,4 2,6
N 2,8 3,0
O 4,89 4,99
P 5,39 5,49
Q 5,7 –
R – 7,7
S 2,2 2,3
T – 0,6
U 2,4 2,5
c
2,7 –
U1
AA 42° 45°
AB – 45°
AC – 45°
h,i
7,5° 8,5°
AD
– 14 – IEC 61754-7-3:2019 © IEC 2019
Dimensions
mm (unless otherwise noted)
Reference
Minimum Maximum
j
0,2 0,4
BA
0,2 0,5
BB
1,6 3,3
CA
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
Each guide pin shall be retained with a minimum force of 19,6 N. Surface roughness R shall be below
z
0,5 µm.
b
Dimension C is defined as the distance between two pin-hole centres.
c
Dimensions D1 and U1 are defined only at the end of the connector as shown.
d
Dimension I is given for a fibre end face centre of a plug end when not mated. It is noticed that a ferrule is
movable by a certain axial compression force, and therefore dimension I is variable. Ferrule compression force
shall be 18,0 N to 22,0 N when the position of the fibre end face from datum Z is in the range of 8,2 mm to
8,4 mm.
e
Dimension I is measured at the centre line between the two pin-hole centres.
f
The coupling sleeve shall be movable by a certain axial compression force. Dimension L is given for a coupling
sleeve end when not mated. Coupling sleeve compression force shall be 2,9 N to 6,9 N when the position of
the coupling sleeve end face from datum Z is in the range of 0 mm to 0,1 mm to the right or to the left of datum
Z.
g
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve. When the
coupling sleeve is moved for unlocking, the position of the coupling sleeve end face shall be larger than 2,0 mm
in the left direction from datum Z.
h
The down-angled and up-angled plugs shall be clearly marked to distinguish them from each other and flat
interfaces through the use of colour, labelling, or other appropriate identification method. This identification
method shall be visible when the plug is in the mated or unmated condition.
j
Since angled MPO connectors require a Y-offset of the fibre holes in relation to the guide pin holes, and the
Y-offset is referenced from the epoxy window of the ferrule, the angle shall be polished as a down-angle from
the epoxy window. The orientation of the ferrule epoxy window may be reversed in the MPO connector to
produce the up-angle variant.
Figure 9 shows MPO female plug, flat interface. Table 6 gives the dimensions of the MPO
female plug, flat interface.
Figure 9 – MPO female plug, flat interface

– 16 – IEC 61754-7-3:2019 © IEC 2019
Table 6 – Dimensions of the MPO female plug, flat interface
Dimensions
mm (unless otherwise noted)
Reference
Minimum Maximum
a
0,549 0,551
A
b
5,297 5,303
C
D 6,3 6,5
c
6,7 –
D1
E 8,34 8,54
F 9,49 9,59
G 10,85 11,05
H 12,19 12,59
d,e
8,8 9,2
I
J 7,9 8,1
K 1,4 –
f,g
0,2 0,8
L
M 2,4 2,6
N 2,8 3,0
O 4,89 4,99
P 5,39 5,49
Q 5,7 –
R – 7,7
S 2,2 2,3
U 2,4 2,5
c
2,7 –
U1
AA 42° 45°
AB – 45°
AC – 45°
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
Each pin-hole shall accept a gauge pin as shown in Figure 3 to a depth of 5,5 mm with a maximum force of 1,7 N.
In addition, two pin-holes of a plug shall accept a gauge as shown in Figure 4 to a depth of 5,5 mm with a
maximum force of 3,4 N.
b
Dimension C is defined as the distance between two pin-hole centres.
c
Dimensions D1 and U1 are defined only at the end of the connector as shown.
d
Dimension I is given for a fibre end face centre of a plug end when not mated. It is noticed that a ferrule is
movable by a certain axial compression force, and therefore dimension I is variable. Ferrule compression force
shall be 18,0 N to 22,0 N when the position of the fibre end face from datum Z is in the range of 8,2 mm to
8,4 mm.
e
Dimension I is measured at the centre line between the two pin-hole centres.
f
The coupling sleeve shall be movable by a certain axial compression force. Dimension L is given for a coupling
sleeve end when not mated. Coupling sleeve compression force shall be 2,9 N to 6,9 N when the position of
the coupling sleeve end face from datum Z is in the range of 0 mm to 0,1 mm to the right or to the left of datum
Z.
g
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve. When the
coupling sleeve is moved for unlocking, the position of the coupling sleeve end face shall be larger than 2,0 mm
in the left direction from datum Z.

Figure 10 shows MPO male plug, flat interface. Table 7 gives the dimensions of the MPO male
plug, flat interface.
Figure 10 – MPO male plug, flat interface

– 18 – IEC 61754-7-3:2019 © IEC 2019
Table 7 – Dimensions of the MPO male plug, flat interface
Dimensions
mm (unless otherwise noted)
Reference
Minimum Maximum
a
0,547 0,549
A
b
5,297 5,303
C
D 6,3 6,5
c
6,7 –
D1
E 8,34 8,54
F 9,49 9,59
G 10,85 11,05
H 12,19 12,59
d,e
8,8 9,2
I
J 7,9 8,1
K 1,4 –
f,g
0,2 0,8
L
M 2,4 2,6
N 2,8 3,0
O 4,89 4,99
P 5,39 5,49
Q 5,7 –
R – 7,7
S 2,2 2,3
U 2,4 2,5
c
2,7 –
U1
AA 42° 45°
AB – 45°
AC – 45°
h
0,2 0,4
BA
0,2 0,5
BB
1,6 3,3
CA
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
Each guide pin shall be retained with a minimum force of 19,6 N. Surface roughness R shall be below
z
0,5 µm.
b
Dimension C is defined as the distance between two pin-hole centres.
c
Dimensions D1 and U1 are defined only at the end of the connector as shown.
d
Dimension I is given for a fibre end face centre of a plug end when not mated. It is noticed that a ferrule is
movable by a certain axial compression force, and therefore dimension I is variable. Ferrule compression force
shall be 18,0 N to 22,0 N when the position of the fibre end face from datum Z is in the range of 8,2 mm to
8,4 mm.
e
Dimension I is measured at the centre line between the two pin-hole centres.
f
The coupling sleeve shall be movable by a certain axial compression force. Dimension L is given for a coupling
sleeve end when not mated. Coupling sleeve compression force shall be 2,9 N to 6,9 N when the position of
the coupling sleeve end face from datum Z is in the range of 0 mm to 0,1 mm to the right or to the left of datum
Z.
g
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve. When the
coupling sleeve is moved for unlocking, the position of the coupling sleeve end face shall be larger than 2,0 mm
in the left direction from datum Z.
h
The top shape of guide-pin may be a round shape that is symmetrical about the guide-pin axis with a minimum
radius of 0,15 mm.
Figure 11 shows opposed keyway configuration of MPO adaptor interface. Table 8 gives the
dimensions of the MPO adaptor interface, opposed keyway configuration.

Figure 11 – MPO adaptor interface, opposed keyway configuration

– 20 – IEC 61754-7-3:2019 © IEC 2019
Table 8 – Dimensions of the MPO adaptor interface, opposed keyway configuration
Dimensions
mm (unless otherwise noted)
Reference
Minimum Maximum
E 8,54 8,74
F 9,6 9,7
a
12,6 –
H
8,2 8,4
I
– 1,39
K
b
0 0,2
L
1,6 2,0
M
2,4 2,6
N
5,0 5,1
O
5,5 5,7
P
7,8 –
R
2,65 2,85
S
2,45 2,55
T1
0,95 1,15
V
– 12,2
a
W
3,4 –
X
45° 48°
AA
45° 50°
AB
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
An adaptor latch shall be allowed the maximum deflection given by the connector and adaptor requirements.
To ensure intermateability, the following requirement shall be met:
(φH−φW )
mm
> 0,53
b
Dimension L is the distance from datum Z to a latch-ledge end. The latch-ledge end may be located to the
right or to the left of datum Z.

Figure 12 shows aligned keyway configuration of MPO adaptor interface. Table 9 gives
dimensions of the MPO adaptor interface, aligned keyway configuration.

Figure 12 – MPO adaptor interface, aligned keyway configuration

– 22 – IEC 61754-7-3:2019 © IEC 2019
Table 9 – Dimensions of the MPO adaptor interface,
aligned keyway configuration
Dimensions
mm (unless otherwise noted)
Reference
Minimum Maximum
E 8,54 8,74
F 9,6 9,7
a
12,6 –
H
b 8,2 8,4
I
– 1,39
K
c 0 0,2
L
1,6 2,0
M
2,4 2,6
N
5,0 5,1
O
5,5 5,7
P
7,8 –
R
2,65 2,85
S
2,45 2,55
T1
0,95 1,15
V
– 12,2
a
W
3,4 –
X
45° 48°
AA
45° 50°
AB
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
An adaptor latch shall be allowed the maximum deflection given by the connector and adaptor requirements.
To ensure intermateability, the following requirement shall be met:
(φH−φW )
mm
> 0,53
b
The keyways for each MPO plug are aligned on the same side of the adaptor. Dimension I is the distance from
datum Z to the adaptor centreline.
c
Dimension L is the distance from datum Z to a latch-ledge end. The latch-ledge end may be located to the
right or to the left of datum Z.

Figure 13 shows the angled interface of MPO active device receptacle and Table 10 gives
dimensions of the MPO active device receptacle, angled interface.

Figure 13 – MPO active device receptacle, angled interface

– 24 – IEC 61754-7-3:2019 © IEC 2019
Table 10 – Dimensions of the MPO active device receptacle, angled interface
Dimensions
Reference mm (unless otherwise noted)
Minimum Maximum
a
0,547 0,549
A
8,54 8,74
E
9,6 9,7
F
b 12,6 –
H
8,2 8,4
c
I
– 1,39
K
0 0,2
d
L
1,6 2,0
M
2,4 2,6
N
5,0 5,1
O
5,5 5,7
P
7,8 –
R
2,65 2,85
S
– 0,6
T
2,45 2,55
T1
0,95 1,15
V
- 12,2
b
W
3,4 –
X
45° 48°
AA
45° 50°
AB
7,5° 8,5°
AD
0,2 0,4
e
BA
0,2 0,5
BB
1,6 3,3
CA
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
Each guide pin shall be retained with a minimum force of 19,6 N. Surface roughness R shall be below
z
0,5 µm.
b
An adaptor latch shall be allowed the maximum deflection given by the connector and adaptor requirements.
To ensure intermateability, the following requirement shall be met:
(φH−φW )
mm
> 0,53
c
Dimension I is defined at the centre line between the two guide-pin centres.
d
Dimension L is the distance from datum Z to a latch-ledge end. The latch-ledge end may be located to the
right or to the left of datum Z.
e
The top shape of guide-pin may be a round shape that is symmetrical about the guide-pin axis with a minimum
radius of 0,15 mm.
Figure 14 shows flat interface of MPO active device receptacle and Table 11 gives dimensions
of the MPO active device receptacle, flat interface.

Figure 14 – MPO active device receptacle, flat interface

– 26 – IEC 61754-7-3:2019 © IEC 2019
Table 11 – Dimensions of the MPO active device receptacle, flat interface
Dimensions
Reference mm (unless otherwise noted)
Minimum Maximum
a
A 0,547 0,549
E 8,54 8,74
F 9,6 9,7
b
12,6 –
H
c 8,2 8,4
I
– 1,39
K
d 0 0,2
L
1,6 2,0
M
2,4 2,6
N
5,0 5,1
O
5,5 5,7
P
7,8 –
R
2,65 2,85
S
2,45 2,55
T1
0,95 1,15
V
- 12,2
b
W
3,4 –
X
45° 48°
AA
45° 50°
AB
0,2 0,4
e
BA
0,2 0,5
BB
1,6 3,3
CA
The mating/unmating force between an MPO connector and adaptor shall not exceed 40,0 N.
a
Each guide pin shall be retained with a minimum force of 19,6 N. Surface roughness R shall be below
z
0,5 µm.
b
An adaptor latch shall be allowed the maximum deflection given by the connector and adaptor requirements.
To ensure intermateability, the following requirement shall be met:
(φH−φW )
mm
> 0,53
c
Dimension I is defined at the centre line between the two guide-pin centres.
d
Dimension L is the distance from datum Z to a latch-ledge end. The latch-ledge end may be located to the
right or to the left of datum Z.
e
The top shape of guide-pin may be a round shape that is symmetrical about the guide-pin axis with a minimum
radius of 0,15 mm.
___________
– 28 – IEC 61754-7-3:2019 © IEC 2019
SOMMAIRE
AVANT-PROPOS . 29
INTRODUCTION . 31
1 Domaine d'application . 32
2. Références normatives . 32
3. Termes et définitions . 32
4. Description . 32
5 Interfaces . 33

Figure 1 – Configurations de connecteurs MPO . 34
Figure 2 – Schéma d’emplacement des cibles de référence optique . 34
Figure 3 – Broche calibrée . 35
Figure 4 – Calibre de fiche . 35
Figure 5 – Fiche femelle MPO, interface avec angle orienté vers le bas . 36
Figure 6 – Fiche femelle MPO, interface avec angle orienté vers le haut. 37
Figure 7 – Fiche mâle MPO, interface avec angle orienté vers le bas. 39
Figure 8 – Fiche mâle MPO, interface avec angle orienté vers le haut . 39
Figure 9 – Fiche femelle MPO, interface droite . 41
Figure 10 – Fiche mâle MPO, interface droite . 43
Figure 11 – Interface de raccord MPO, configuration avec rainures de détrompage
opposées . 45
Figure 12 – Interface de raccord MPO, configuration avec rainures de détrompage
alignées . 47
Figure 13 – Embase de dispositif actif MPO, interface avec angle . 49
Figure 14 – Embase de dispositif actif MPO, interface droite . 51

Tableau 1 – Compatibilité d'accouplement entre fiches et raccords/boîtiers/embases . 33
Tableau 2 – Dimensions de la broche calibrée . 35
Tableau 3 – Dimensions du calibre de fiche . 36
Tableau 4 – Dimensions d'une fiche femelle MPO, interface avec angle orienté vers le
bas ou vers le haut . 37
Tableau 5 – Dimensions d'une fiche mâle MPO, interface avec angle orienté vers le
bas ou vers le haut . 40
Tableau 6 – Dimensions d'une fiche femelle MPO, interface droite . 42
Tableau 7 – Dimensions d'une fiche mâle MPO, interface droite . 44
Tableau 8 – Dimensions de l'interface d'un raccord MPO, configuration avec rainures
de détrompage opposées . 46
Tableau 9 – Dimensions de l'interface d'un raccord MPO, configuration avec rainures
de détrompage alignées . 48
Tableau 10 – Dimensions de l’embase d'un dispositif actif MPO, interface à angle . 50
Tableau 11 – Dimensions de l’embase d'un dispositif actif MPO, interface droite . 52

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
DISPOSITIFS D'INTERCONNEXION ET
COMPOSANTS PASSIFS ÀFIBRES OPTIQUES –
INTERFACES DE CONNECTEURS À FIBRES OPTIQUES –

Partie 7-3: Famille de connecteurs de type MPO –
Deux rangées de 16 fibres
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l'IEC). L’IEC a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. A cet effet, l'IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de l'IEC"). Leur élaboration est confiée à des comités d'études, aux
travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l'IEC, participent également aux
travaux. L’IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l'IEC concernant les questions techniques représentent, dans la mesure du
possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l'IEC intéressés
sont représentés dans chaque comité d’étu
...