IEC 61754-7-1:2014

IEC 61754-7-1 ®
Edition 1.0 2014-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces –
Part 7-1: Type MPO connector family – One fibre row

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces
de connecteurs fibroniques –
Partie 7-1: Famille de connecteurs de type MPO – Une rangée de fibres

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IEC 61754-7-1 ®
Edition 1.0 2014-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic

connector interfaces –
Part 7-1: Type MPO connector family – One fibre row

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces

de connecteurs fibroniques –
Partie 7-1: Famille de connecteurs de type MPO – Une rangée de fibres

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-1099-3

– 2 – IEC 61754-7-1:2014 © IEC 2014
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Description . 5
3 Interfaces . 5

Figure 1 – MPO connector configurations . 6
Figure 2 – MPO female plug, down-angled interface . 7
Figure 3 – MPO female plug, up-angled interface . 7
Figure 4 – Optical datum target location diagrams . 9
Figure 5 – Gauge pin . 10
Figure 6 – Gauge for plug . 10
Figure 7 – MPO male plug, down-angled interface . 11
Figure 8 – MPO male plug, up-angled interface . 12
Figure 9 – MPO adaptor interface, opposed keyway configuration . 14
Figure 10 – MPO female plug, flat interface . 16
Figure 11 – MPO male plug, flat interface . 18
Figure 12 – MPO backplane housing interface (1 of 2) . 20
Figure 13 – MPO printed board housing interface (1 of 2) . 23
Figure 14 – MPO adaptor interface, aligned keyway configuration . 26
Figure 15 – MPO active device receptacle, angled interface . 28
Figure 16 – MPO active device receptacle, flat interface . 30

Table 1 – Dimensions of the MPO female plug, down- or up-angled interfaces . 8
Table 2 – Dimensions of the gauge pin . 10
Table 3 – Dimensions of the gauge for plug . 11
Table 4 – Dimensions of the MPO male plug, down- or up-angled interfaces. 13
Table 5 – Dimensions of the MPO adaptor interface, opposed keyway configuration . 15
Table 6 – Dimensions of the MPO female plug, flat interface . 17
Table 7 – Dimensions of the MPO male plug, flat interface . 19
Table 8 – Dimensions of the MPO backplane housing . 22
Table 9 – Grade . 23
Table 10 – Dimensions of the MPO printed board housing interface . 25
Table 11 – Dimensions of the MPO adaptor interface, aligned keyway configuration . 27
Table 12 – Dimensions of the MPO active device receptacle, angled interface . 29
Table 13 – Dimensions of the MPO active device receptacle, flat interface . 31

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

Part 7-1: Type MPO connector family –
One fibre row
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61754-7-1 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
This first edition of IEC 61754-7-1, along with the first edition of IEC 61754-7-2, cancels and
replaces the third edition of IEC 61754-7, published in 2008.
This first edition of IEC 61754-7-1 includes the one fibre row MPO variants, including the
addition of active device receptacles and up-angled plugs.
The first edition of IEC 61754-7-2 will include the two fibre row MPO variants and related
active device receptacles and up-angled plugs.

– 4 – IEC 61754-7-1:2014 © IEC 2014
Following the publication of both IEC 61754-7-1 and IEC 61754-7-2, IEC 61754-7 will be
withdrawn.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/3794A/FDIS 86B/3826/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 the parts in 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.
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.
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CONNECTOR INTERFACES –

Part 7-1: Type MPO connector family –
One fibre row
1 Scope
This part of IEC 61754 defines the standard interface dimensions for type MPO family of
connectors with one row of fibres.
2 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 0,7 mm diameter as
its alignment. The variant in this standard provides a joint of 2 to 12 fibres by arraying them
between two pin-positioning holes in the ferrule in a one-layer, (one-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 are connected. For aligned keyway
adaptors with angled interfaces, one down-angled plug and one up-angled plug are connected.
Moreover, connector interfaces between the female plug and the male plug are configured by
applying a backplane housing and a printed board housing instead of the adaptor.
Additionally, the female plug interface is intermateable with the active device receptacle.
3 Interfaces
This standard contains the following standard interfaces:
Interface IEC 61754-7-1-1: MPO female plug, down-angled interface for 2 to 12 fibres
Interface IEC 61754-7-1-2: MPO male plug, down-angled interface for 2 to 12 fibres
Interface IEC 61754-7-1-3: MPO adaptor interface – Opposed keyway configuration
Interface IEC 61754-7-1-4: MPO female plug, flat interface for 2 to 12 fibres

– 6 – IEC 61754-7-1:2014 © IEC 2014
Interface IEC 61754-7-1-5: MPO male plug, flat interface for 2 to 12 fibres
Interface IEC 61754-7-1-6: MPO backplane housing interface
Interface IEC 61754-7-1-7: MPO printed board housing interface
Interface IEC 61754-7-1-8: MPO adaptor interface – Aligned keyway configuration
Interface IEC 61754-7-1-9:  MPO active device receptacle, angled interface
Interface IEC 61754-7-1-10: MPO active device receptacle, flat interface
Interface IEC 61754-7-1-11: MPO female plug, up-angled interface for 2 to 12 fibres
Interface IEC 61754-7-1-12: MPO male plug, up-angled interface for 2 to 12 fibres
The following interfaces are intermateable:
Female plugs Adaptors/housings/ Male plugs
receptacles
61754-7-1-1 61754-7-1-3 61754-7-1-2
61754-7-1-11 61754-7-1-3 61754-7-1-12
61754-7-1-1 61754-7-1-8 61754-7-1-12
61754-7-1-11 61754-7-1-8 61754-7-1-2
61754-7-1-4 61754-7-1-3 and 61754-7-1-8 61754-7-1-5
61754-7-1-1 or 61754-7-1-11 61754-7-1-6 and 61754-7-1-7 61754-7-1-2 or 61754-7-1-12
61754-7-1-4 61754-7-1-6 and 7-1-7 61754-7-1-5
61754-7-1-1 61754-7-1-9 N/A
61754-7-1-4 61754-7-1-10 N/A
NOTE Connector interfaces with 2 to 12 fibres will intermate and will correctly align the lower defined numbers of
optical datum targets (see Figure 4)
Figure 1 shows MPO connector configurations.
IEC
Figure 1 – MPO connector configurations

Figures 2 and 3 show down-angled and up-angled interface of the MPO female plug. Table 1
gives the dimensions of the MPO female plug, down- or up-angled interfaces.
IEC
Figure 2 – MPO female plug, down-angled interface
IEC
Figure 3 – MPO female plug, up-angled interface

– 8 – IEC 61754-7-1:2014 © IEC 2014
Table 1 – Dimensions of the MPO female plug, down- or up-angled interfaces
Dimensions
Reference
Minimum Maximum
a
A 0,699 mm 0,701 mm
b
C 4,597 mm 4,603 mm
D 6,3 mm 6,5 mm
h
D1 6,7 mm –
E 8,34 mm 8,54 mm
F 9,49 mm 9,59 mm
G 10,85 mm 11,05 mm
H 12,19 mm 12,59 mm
c,f
I 8,8 mm 9,2 mm
J 7,9 mm 8,1 mm
K 1,4 mm –
d,e
L 0,2 mm 0,8 mm
M 2,4 mm 2,6 mm
N 2,8 mm 3,0 mm
O 4,89 mm 4,99 mm
P 5,59 mm 5,69 mm
Q 5,7 mm –
R – 7,7 mm
S 2,9 mm 3,1 mm
T – 0,8 mm
U 2,4 mm 2,5 mm
h
U1 2,7 mm –
AA 42° 45°
AB – 45°
AC – 45°
i,j
AD 7,5° 8,5°
a
Each pin-hole shall accept a gauge pin as shown in Figure 5 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 5 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
Dimension I is given for a fibre endface 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 7,8 N to 11,8 N when a position of the fibre endface from the datum Z is in the range of 8,2 mm to
8,4 mm.
d
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 endface from datum Z is in the range of 0 mm to 0,1 mm to the right or to the left of datum Z.
e
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve, when it is
separate from an adaptor. When the coupling sleeve is moved for unlocking, the position of the coupling sleeve
endface shall be larger than 2,0 mm in the left direction from the datum Z.
f
Dimension I is defined at the centre line between the two pin-hole centres.
g
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.
h
Dimensions D1 and U1 are defined only at the end of the plug as shown.
i
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 plugs 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 plug to produce the up-angle
variant.
Figure 4 shows optical datum target location diagrams. Figure 5 shows the gauge pin and
Table 2 shows its dimensions.
Dimensions in millimetres
Y
Y Y
Two fibres
Four fibres
Eight fibres
Y
Y
Ten fibres
Twelve fibres
IEC
Figure 4 – Optical datum target location diagrams

X
X
0,125 0,125
0,125 0,125
0,375
0,375
0,625
0,625
X
0,875
0,875
1,125
1,125
0,125 0,125
0,375 0,375
X 0,125 0,125
0,375
0,375
X 0,125 0,125
0,625
0,625
0,875
0,875
1,125
1,125
0,375
1,375 1,375 0,375
0,625
0,625
0,875
0,875
– 10 – IEC 61754-7-1:2014 © IEC 2014

BB
BC
B
IEC
Figure 5 – Gauge pin
Table 2 – Dimensions of the gauge pin
Dimensions
mm
Reference Notes
Minimum Maximum
A 0,698 5 0,699 0 1
B 10,8 11,2 2
BA 0,2 0,4
BB 0,2 0,5
BC 6,0 –
NOTE 1 Surface roughness R = 0,1 µm for the length of dimension BC.
z
NOTE 2 Typical dimensions.
Figure 6 shows the gauge for the plug and Table 3 shows its dimensions.
∅0,001
W
W
BB
U
BC
0,000 5
IEC
Figure 6 – Gauge for plug
∅BA
∅A
D
C
∅BA
∅A
0,0005
Table 3 – Dimensions of the gauge for plug
Reference Dimensions Notes
mm
Minimum Maximum
A 0,698 5
0,699 0 For two pins, 1
C 4,599 5 4,600 5
D 6,3 6,5 2
U 2,4 2,5 2
BA 0,2 0,4
BB 0,2 0,5
BC 6,0 6,5
NOTE 1 Surface roughness R = 0,1 µm.
z
NOTE 2 Typical dimensions.
Figures 7 and 8 show down-angled and up-angled interface of MPO male plug. Table 4 gives
the dimensions of the MPO male plug, down- or up-angled interfaces.
IEC
Figure 7 – MPO male plug, down-angled interface

– 12 – IEC 61754-7-1:2014 © IEC 2014

IEC
Figure 8 – MPO male plug, up-angled interface

Table 4 – Dimensions of the MPO male plug, down- or up-angled interfaces
Dimensions
Reference
Minimum Maximum
a
A 0,697 mm 0,699 mm
b
C 4,597 mm 4,603 mm
D 6,3 mm 6,5 mm
i
D1 6,7 mm –
E 8,34 mm 8,54 mm
F 9,49 mm 9,59 mm
G 10,85 mm 11,05 mm
H 12,19 mm 12,59 mm
c,g
I 8,8 mm 9,2 mm
J 7,9 mm 8,1 mm
K 1,4 mm –
d,e
L 0,2 mm 0,8 mm
M 2,4 mm 2,6 mm
N 2,8 mm 3,0 mm
O 4,89 mm 4,99 mm
P 5,59 mm 5,69 mm
Q 5,7 mm –
R – 7,7 mm
S 2,9 mm 3,1 mm
T – 0,8 mm
U 2,4 mm 2,5 mm
i
U1 2,7 mm –
AA 42º 45º
AB – 45º
AC – 45º
j,k
AD 7,5º 8,5º
f
BA 0,2 mm 0,4 mm
BB 0,2 mm 0,5 mm
CA 1,6 mm 3,3 mm
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 guide-pin centres.
c
Dimension I is given for a fibre endface centre of a plug end when not mated. It is noticed that a ferrule is
movable by a certain axial compression force, and therefore the dimension I is variable. Ferrule compression
force shall be 7,8 N to 11,8 N when a position of the fibre endface from the datum Z is in the range of 8,2 mm to
8,4 mm.
d
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 endface from datum Z is in the range of 0 mm to 0,1 mm to the right or to the
left of datum Z.
e
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve when it is
separate from an adaptor. When the coupling sleeve is moved for unlocking, the position of the coupling
sleeve endface shall be larger than 2,0 mm in the left direction from the datum Z.
f
The top shape of the guide-pin may be a round shape that is symmetrical about the guide-pin axis with a
minimum radius of 0,15 mm.
g
Dimension I is defined at the centre line between the two guide-pin centres.
h
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.
i
Dimensions D1 and U1 are defined only at the end of the plug as shown.
j
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.
k
Since angled MPO plugs 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 plug to produce
the up-angle variant.
– 14 – IEC 61754-7-1:2014 © IEC 2014
Figure 9 shows opposed keyway configuration of MPO adaptor interface. Table 5 gives the
dimensions of the MPO adaptor interface, opposed keyway configuration.
R
P
O
X
N
Z
I
A
AB
B
B
K
AA
A
L
Keyways opposed
Section A-A
M
IEC
Section B-B
Figure 9 – MPO adaptor interface, opposed keyway configuration
S
∅H
∅W
∅F
V ∅E V
Table 5 – Dimensions of the MPO adaptor interface, opposed keyway configuration
Dimensions
mm
Reference Notes
Minimum Maximum
E
8,54 mm 8,74 mm
F 9,6 mm 9,7 mm
a
H 12,6 mm –
I 8,2 mm 8,4 mm
K – 1,39 mm
b
L 0 0,1 mm
M 1,6 mm 2,0 mm
N 2,4 mm 2,6 mm
O 5,0 mm 5,1 mm
P 5,7 mm 5,9 mm
R 7,8 mm –
S 3,4 mm 3,6 mm
V 0,95 mm 1,15 mm
a
W – 12,2 mm
X 3,4 mm –
AA 45° 48°
AB 45° 50°
a
An adaptor latch shall be allowed the maximum deflection given by the plug and adaptor requirements.
To ensure intermateability, the following requirement shall be met:
(φH−φW )
> 0,53 mm
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.
c
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.

Figure 10 shows the flat interface of the MPO female plug interface. Table 6 gives the
dimensions of the MPO female plug, flat interface.

– 16 – IEC 61754-7-1:2014 © IEC 2014

IEC
Figure 10 – MPO female plug, flat interface

Table 6 – Dimensions of the MPO female plug, flat interface
Dimensions Notes
Reference
Minimum Maximum
a
A 0,699 mm 0,701 mm
b
C 4,597 mm
4,603 mm
D 6,3 mm 6,5 mm
h
D1 6,7 mm –
E 8,34 mm 8,54 mm
F 9,49 mm 9,59 mm
G 10,85 mm
11,05 mm
H 12,19 mm 12,59 mm
c,f
I 8,8 mm 9,2 mm
J 7,9 mm 8,1 mm
K 1,4 mm –
d,e
L 0,2 mm
0,8 mm
M 2,4 mm 2,6 mm
N 2,8 mm 3,0 mm
O 4,89 mm 4,99 mm
P 5,59 mm 5,69 mm
Q 5,7 mm
–
R – 7,7 mm
S 2,9 mm 3,1 mm
U 2,4 mm 2,5 mm
h
U1 2,7 mm –
AA
42° 45°
AB – 45°
AC – 45°
a
Each pin-hole shall accept a gauge pin as shown in Figure 5 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 5 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
Dimension I is given for a fibre endface 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 7,8 N to 11,8 N when a position of the fibre endface from the datum Z is in the range of
8,2 mm to 8,4 mm.
d
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 endface from datum Z is in the range of 0 mm to 0,1 mm to the right or to
the left of datum Z.
e
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve, when it is
separate from an adaptor. When the coupling sleeve is moved for unlocking, the position of the coupling
sleeve endface shall be larger than 2,0 mm in the left direction from the datum Z.
f
Dimension I is defined at the centre line between the two pin-hole centres.
g
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.
h
Dimensions D1 and U1 are defined only at the end of the plug as shown.

Figure 11 shows a flat interface of the MPO male plug interface. Table 7 gives the dimensions
of the MPO male plug, flat interface.

– 18 – IEC 61754-7-1:2014 © IEC 2014

IEC
Figure 11 – MPO male plug, flat interface

Table 7 – Dimensions of the MPO male plug, flat interface
Dimensions
Reference Notes
Minimum Maximum
a
A 0,697 mm 0,699 mm
b
C 4,597 mm
4,603 mm
D 6,3 mm 6,5 mm
i
D1 6,7 mm –
E 8,34 mm 8,54 mm
F 9,49 mm 9,59 mm
G 10,85 mm
11,05 mm
H 12,19 mm 12,59 mm
c,g
I 8,8 mm 9,2 mm
J 7,9 mm 8,1 mm
K 1,4 mm –
d,e
L 0,2 mm
0,8 mm
M 2,4 mm 2,6 mm
N 2,8 mm 3,0 mm
O 4,89 mm 4,99 mm
P 5,59 mm 5,69 mm
Q 5,7 mm
–
R – 7,7 mm
S 2,9 mm 3,1 mm
U 2,4 mm 2,5 mm
i
U1 2,7 mm –
AA 42°
45°
AB – 45°
AC – 45°
f
BA 0,2 mm 0,4 mm
BB 0,2 mm 0,5 mm
CA 3,3 mm
1,6 mm
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 guide-pin centres.
c
Dimension I is given for a fibre endface centre of a plug end when not mated. It is noticed that a ferrule
is movable by a certain axial compression force, and therefore the dimension I is variable. Ferrule
compression force shall be 7,8 N to 11,8 N when a position of the fibre endface from the datum Z is in the
range of 8,2 mm to 8,4 mm.
d
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 endface from datum Z is in the range of 0 mm to 0,1 mm to the right
or to the left of datum Z.
e
An adaptor coupling part shall be unlocked by a left-direction movement of a coupling sleeve, when it is
separate from an adaptor. When the coupling sleeve is moved for unlocking, the position of the coupling
sleeve endface shall be larger than 2,0 mm in the left direction from the datum Z.
f
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.
g
Dimension I is defined at the centre line between the two guide-pin centres.
h
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.
i
Dimensions D1 and U1 are defined only at the end of the plug as shown.

Figure 12 shows the MPO backplane housing interface. Table 8 gives the dimensions of the
MPO backplane housing interface.

– 20 – IEC 61754-7-1:2014 © IEC 2014
Inner housing
Backplane
E
Outer housing
Backplane
D Backplane
Back housing
Outer housing
A C
B
DA
DC
DB
Projected from A
(Rear view)
B
(Side view)
C
A
Backplane
Projected from B (Bottom view)
P
O
X
N
Expanded View D
IEC
Figure 12 – MPO backplane housing interface (1 of 2)
S
DE
DD
Backplane
Projected from F (Top view)
Backplane
Outer housing
Inner housing
Cross-section G-G
Expanded view E (Front view)
Inner latch
spring
Inner latch
Backplane
Cross-section H-H
Expanded cross-section I
IEC
a
In the figure of cross-section G-G, the inner housing shall be movable to the right at least 0,9 mm under the
condition that the inner latch is completed. In addition, the inner housing shall be movable at least 2 mm to the
left when the inner latch is released.
b
In the figure of expanded cross-section I, the inner latch spring shall be moved by more than 0,65 mm to the
right when the inner latch is released or latched.
Figure 12 (2 of 2)
– 22 – IEC 61754-7-1:2014 © IEC 2014
Table 8 – Dimensions of the MPO backplane housing
Dimensions
Reference Notes
Minimum Maximum
E 8,54 mm 8,74 mm A part of diameter
F 9,6 mm 9,7 mm A part of diameter
H 12,6 mm – A part of diameter
K 1,19 mm 1,39 mm
L 0 0,1 mm
M 1,6 mm 2,0 mm
N 2,4 mm 2,6 mm
O 5,0 mm 5,1 mm
P 5,7 mm 5,9 mm
S 3,4 mm 3,6 mm
V 0,95 mm 1,15 mm
W 11,8 mm 12,2 mm A part of diameter
X 3,4 mm –
AA 45° 48°
AB 45° 50°
DA  See Table 9
DB  See Table 9
DC 12,25 mm 12,35 mm
DD 16,5 mm 16,6 mm
DE 14,3 mm 14,4 mm
DF 9,91 mm 10,01 mm
DG 8,2 mm 8,4 mm
DH 7,9 mm 8,1 mm See note
DI 4,15 mm 4,45 mm See note
DJ 2,65 mm 2,75 mm
DK 4,1 mm 4,3 mm
DL 3,35 mm 3,45 mm
DM 0,9 mm 1,0 mm
DN 0,65 mm
0,55 mm
DO 11,55 mm 11,65 mm
DP 9,91 mm 10,01 mm
DQ 9,15 mm 9,25 mm
DR 0,35 mm 0,45 mm
DS 0,35 mm
0,25 mm
DT 0,55 mm 0,65 mm
DU 0,55 mm 0,70 mm
EA 12,14 mm 12,2 mm
EB 4,95 mm 5,05 mm
EC 7,94 mm 8,00 mm
ED 5,6 mm 5,8 mm
EE 8,15 mm 8,25 mm
EF 5,55 mm 5,65 mm
EG 2,55 mm 2,65 mm
EH 0,85 mm 0,95 mm
EI 8,6 mm 8,7 mm
EJ 1,45 mm 1,55 mm
EK 1,9 mm 2,0 mm
EL 0,35 mm 0,45 mm
NOTE These dimensions are given when the inner housing is moved in its most left-side position on condition
that the inner latch is engaged.

Table 9 gives the grade.
Table 9 – Grade
Dimensions
mm
Grade Reference
Notes
Minimum Maximum
Backplane thickness 2,4 mm
1 DA 2,0 2,1
(see note)
DB 2,65 2,75
Backplane thickness 3,2 mm
2 DA 2,0 2,1
(see note)
DB 3,45 3,55
NOTE Add grade number to the interface reference number.

Figure 13 shows MPO printed board housing interface. Table 10 gives the dimensions of the
MPO printed board housing interface.

A E
D
A C
B
DG
DF Main latch spring
Printed board
Printed board Printed board
B
Projected from A Projected from C
(Front view) (Rear view)
(Side view)
C
Printed board
Projected from B
IEC
(Bottom view)
Figure 13 – MPO printed board housing interface (1 of 2)

DD
DE
FA
– 24 – IEC 61754-7-1:2014 © IEC 2014
R
P
Printed board
O
X
N
Printed board
G
F F
G
ED
Expanded view D Expanded view E1
(Front view) (Rear view)
A
DP
FE
C
FB
Printed board
FG
EC
FL
K
AB
FD
FI
FJ FK
AA
Printed board
Section F-F Section G-G
L
M
IEC
Figure 13 (2 of 2)
EA
FC
FH
FB
EH
S
V ØE V
ØF
ØW
ØH
Table 10 – Dimensions of the MPO printed board housing interface
Dimensions
Reference Notes
Minimum Maximum
E 8,54 mm 8,74 mm A part of diameter
F 9,6 mm 9,7 mm A part of diameter
H 12,6 mm – A part of diameter
K 1,19 mm 1,39 mm
L 0 0,1 mm
M 1,6 mm 2,0 mm
N 2,4 mm 2,6 mm
O 5,0 mm 5,1 mm
P 5,7 mm 5,9 mm
R 7,8 mm –
S 3,4 mm 3,6 mm
V 0,95 mm 1,15 mm
W 11,8 mm 12,2 mm A part of diameter
X 3,4 mm –
AA 45° 48°
AB 45° 50°
a
DD 16,5 mm 16,6 mm
DE 14, 05 mm 14,15 mm
DF 9,8 mm 9,9 mm
DG 7,9 mm 8,1 mm
DP 9,8 mm 9,9 mm
EA 12,21 mm 12,27 mm
EB 5,1 mm 5,2 mm
EC 8,01 mm 8,07 mm
ED 5,9 mm 6,1 mm
EH 0,75 mm 0,85 mm
FA 9,1 mm 9,3 mm
FB 0,6 mm 0,8 mm
FC 1,35 mm 1,65 mm
FD 0,25 mm 0,35 mm
FE 11,05 mm 11,15 mm
FF 1,55 mm 1,65 mm
FG 8,9 mm 9,0 mm
FH 1,4 mm 1,6 mm
FI 1,9 mm 2,2 mm
FJ 6,35 mm 6,55 mm
FK 2,9 mm 3,0 mm
FL 0,35 mm 0,45 mm
a
The dimension DD is defined at the top of the main latch spring. The dimension DD shall become greater than
18,6 mm when the printed board housing is coupled to, or removed from a backplane housing.

Figure 14 shows an aligned keyway configuration of the MPO adaptor interface. Table 11
gives dimensions of the MPO adaptor interface, aligned keyway configuration.

– 26 – IEC 61754-7-1:2014 © IEC 2014
R
P
O
X
N
Z
I
A
AB
B B
K
AA
L
A
Keyways aligned
Section A-A
M
Section B-B
IEC
Figure 14 – MPO adaptor interface, aligned keyway configuration
S
∅H
∅W
∅F
V V
∅E
Table 11 – Dimensions of the MPO adaptor interface,
aligned keyway configuration
Dimensions
Reference Notes
Minimum Maximum
E 8,54 mm 8,74 mm
F 9,6 mm 9,7 mm
a
H 12,6 mm –
c
I 8,2 mm 8,4 mm
K – 1,39 mm
b
L 0 0,1 mm
M 1,6 mm 2,0 mm
N 2,4 mm 2,6 mm
O 5,0 mm 5,1 mm
P 5,7 mm 5,9 mm
R 7,8 mm –
S 3,4 mm 3,6 mm
V 0,95 mm 1,15 mm
a
W – 12,2 mm
X 3,4 mm –
AA 45° 48°
AB 45° 50°
a
An adaptor latch shall be allowed the maximum deflection given by the plug and adaptor requirements. To
ensure intermateability, the following requirement shall be met:
(φH−φW )
> 0,53 mm
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.
c
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.
d
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.

– 28 – IEC 61754-7-1:2014 © IEC 2014
Figure 15 shows an angled interface of the MPO active device receptacle and Table 12 gives
dimensions of the MPO active device receptacle, angled interface.
IEC
Figure 15 – MPO active device receptacle, angled interface

Table 12 – Dimensions of the MPO active device receptacle, angled interface
Dimensions
Reference Notes
Minimum Maximum
E 8,54 mm 8,74 mm
F 9,6 mm
9,7 mm
a
H 12,6 mm –
c
I 8,2 mm 8,4 mm
K – 1,39 mm
b
L 0 0,1 mm
M 1,6 mm
2,0 mm
N 2,4 mm 2,6 mm
O 5,0 mm 5,1 mm
P 5,7 mm 5,9 mm
R 7,8 mm –
S 3,4 mm
3,6 mm
T - 0,8 mm
V 0,95 mm 1,15 mm
a
W – 12,2 mm
X 3,4 mm –
AA 45°
48°
AB 45° 50°
AD 7,5˚ 8,5˚
BA 0,2 mm 0,4 mm
BB 0,2 mm 0,5 mm
CA
1,6 mm 3,3 mm
a
An adaptor latch shall be allowed the maximum deflection given by the plug 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.
c
Dimension I is defined at the centre line between the two guide-pin centres.
d
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.

– 30 – IEC 61754-7-1:2014 © IEC 2014
Figure 16 shows flat the interface of an MPO active device receptacle and Table 13 gives
dimensions of the MPO active device receptacle, flat interface.
IEC
Figure 16 – MPO active device receptacle, flat interface

Table 13 – Dimensions of the MPO active device receptacle, flat interface
Dimensions
Reference Notes
Minimum Maximum
E 8,54 mm 8,74 mm
F 9,6 mm
9,7 mm
a
H 12,6 mm –
c
I 8,2 mm 8,4 mm
K – 1,39 mm
b
L 0 0,1 mm
M 1,6 mm
2,0 mm
N 2,4 mm 2,6 mm
O 5,0 mm 5,1 mm
P 5,7 mm 5,9 mm
R 7,8 mm –
S 3,4 mm
3,6 mm
V 0,95 mm 1,15 mm
a
W - 12,2 mm
X 3,4 mm –
AA 45° 48°
AB 45°
50°
BA 0,2 mm 0,4 mm
BB 0,2 mm 0,5 mm
CA 1,6 mm 3,3 mm
a
An adaptor latch shall be allowed the maximum deflection given by the plug 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.
c
Dimension I is defined at the centre line between the two guide-pin centres.
d
The mating/unmating force between an MPO plug and adaptor shall not exceed 30,0 N.

_____________
– 32 – IEC 61754-7-1:2014 © IEC 2014
SOMMAIRE
AVANT-PROPOS . 33
1 Domaine d’application . 35
2 Description . 35
3 Interfaces . 36

Figure 1 – Configurations de connecteurs MPO . 37
Figure 2 – Interface à fiche femelle MPO angulaire vers le bas . 38
Figure 3 – Interface à fiche femelle MPO angulaire vers le haut . 39
Figure 4 – Schémas d’emplacement de la cible de référence optique . 41
Figure 5 – Broche calibrée .
...