IEC 61754-6:2022

Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 6: Type MU connector family

IEC 61754-6:2022 specifies the standard interface dimensions for type MU family of connectors. This third edition cancels and replaces the second edition published in 2013 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the test method IEC 61300-3-22 for the compression force of the ferrule was added;
- Annex D (informative) with cut out dimension requirements for testing the strength of mounted adaptors was added.

Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces de connecteurs fibroniques - Partie 6: Famille de connecteurs de type MU

L'IEC 61754-6:2022 spécifie les dimensions d'interfaces normalisées pour la famille de connecteurs de type MU. Cette troisième édition annule et remplace la deuxième édition parue en 2013. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- ajout de la méthode d'essai de l'IEC 61300-3-22 sur la force de compression de la férule;
- ajout de l'Annexe D (informative) avec les exigences relatives aux dimensions des découpes pour réaliser les essais de résistance des raccords montés.

General Information

• Status: Published
• Publication Date: 27-Feb-2022
• 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: 11-Mar-2022
• Completion Date: 28-Feb-2022

Relations

• Revises: IEC 61754-6:2013 - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 6: Type MU connector family
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61754-6 ®
Edition 3.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces –
Part 6: Type MU connector family

All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
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IEC 61754-6 ®
Edition 3.0 2022-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces –
Part 6: Type MU connector family
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-5124-9

– 2 – IEC 61754-6:2022 RLV  IEC 2022
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Description . 7
5 Interfaces . 8
Annex A (informative) Configuration of type MU-A connector set . 77
Annex B (informative) Configuration of type MU-B connector set . 78
Annex C (informative) Floating 2-port connector plug . 79
Annex D (informative) Panel dimensions . 80
D.1 General . 80
D.2 Simplex adaptor . 80
D.3 4,5 mm duplex adaptor . 80
D.4 6,25 mm duplex adaptor. 81
D.5 Horizontal duplex adaptor . 81
D.6 4,5 mm 8-port adaptor . 82
Bibliography . 83

Figure 1 – Simplex plug connector interface – Push/pull . 11
Figure 2 – 4,5 mm duplex plug connector interface – Push/pull . 14
Figure 3 – Simplex adaptor connector interface – Push/pull . 17
Figure 4 – Pin gauge for resilient alignment sleeve . 19
Figure 5 – 4,5 mm duplex adaptor connector interface – Push/pull . 20
Figure 6 – 8-port adaptor connector interface – Push/pull . 23
Figure 7 – Plug connector interface – For printed board housings . 25
Figure 8 – Sleeve holder interface . 27
Figure 9 – 2-port backplane housing interface . 29
Figure 10 – 2-port printed board housing interface . 33
Figure 11 – 8-port backplane housing interface . 37
Figure 12 – 8-port printed board housing interface . 41
Figure 13 – Simplex active device receptacle interface . 45
Figure 14 – Detail of the mechanical stop for rigid bore alignment feature . 47
Figure 15 – 4,5 mm duplex active device receptacle interface . 48
Figure 16 – Detail of the mechanical stop for rigid bore alignment feature . 50
Figure 17 – 6,25 mm duplex active device receptacle interface . 51
Figure 18 – Detail of the mechanical stop for rigid bore alignment feature . 53
Figure 19 – Plug connector interface – For printed board housings, APC . 54
Figure 20 – Simplex plug connector interface – Push/pull, APC . 57
Figure 21 – 4,5 mm duplex plug connector interface – Push/pull, APC . 60
Figure 22 – 6,25 mm duplex plug connector interface – Push/pull, APC . 63
Figure 23 – 6,25 mm duplex plug connector interface – Push/pull . 66
Figure 24 – 6,25 mm duplex adaptor connector interface . 69

Figure 25 – Horizontal duplex plug connector interface – Push/pull . 71
Figure 26 – Horizontal duplex adaptor connector interface . 74
Figure A.1 – Configuration of type MU-A connector set . 77
Figure B.1 – Configuration of type MU-B connector set . 78
Figure C.1 – Floating 2-port connector plug . 79
Figure D.1 – Panel cut out . 80
Figure D.2 – Panel cut out . 80
Figure D.3 – Panel cut out . 81
Figure D.4 – Panel cut out . 81
Figure D.5 – Panel cut out . 82

Table 1 – Interfaces . 8
Table 2 – Intermateability of MU-A connectors set . 9
Table 3 – Intermateability of MU-B connectors set . 9
Table 4 – Intermateability of MU receptacles . 10
Table 5 – Dimensions of the simplex plug connector interface . 12
Table 6 – Grade of the simplex plug connector . 13
Table 7 – Dimensions of the 4,5 mm duplex plug connector interface . 14
Table 8 – Grade of the 4,5 mm duplex plug connector . 16
Table 9 – Dimensions of the simplex adaptor connector interface . 18
Table 10 – Grade of the simplex adaptor connector . 19
Table 11 – Pin gauge dimensions . 19
Table 12 – Dimensions of the 4,5 mm duplex adaptor connector interface . 21
Table 13 – Grade of the 4,5 mm duplex adaptor connector . 22
Table 14 – Dimensions of the 8-port adaptor connector interface . 24
Table 15 – Grade of the 8-port adaptor connector . 25
Table 16 – Dimensions of the plug connector interface . 26
Table 17 – Grade of the plug connector . 27
Table 18 – Dimensions of the sleeve holder interface . 28
Table 19 – Grade of the sleeve holder . 28
Table 20 – Dimensions of the 2-port backplane housing interface . 31
Table 21 – Grade of the 2-port backplane housing . 32
Table 22 – Dimensions of the 2-port printed board housing interface . 35
Table 23 – Dimensions of the 8-port backplane housing interface . 39
Table 24 – Grade of the 8-port backplane housing . 40
Table 25 – Dimensions of the 8-port printed board housing interface . 43
Table 26 – Dimensions of the simplex active device receptacle interface . 46
Table 27 – Alignment feature grade . 47
Table 28 – Dimensions of the mechanical stop for rigid bore alignment feature . 47
Table 29 – Mechanical stop feature grade . 48
Table 30 – Dimensions of the 4,5 mm duplex active device receptacle interface . 49
Table 31 – Alignment feature grade . 50
Table 32 – Dimensions of the mechanical stop for rigid bore alignment feature . 50

– 4 – IEC 61754-6:2022 RLV  IEC 2022
Table 33 – Mechanical stop feature grade . 51
Table 34 – Dimensions of the 6,25 mm duplex active device receptacle interface . 52
Table 35 – Alignment feature grade . 53
Table 36 – Dimensions of the mechanical stop for rigid bore alignment feature . 53
Table 37 – Mechanical stop feature grade . 54
Table 38 – Dimensions of the plug connector interface – For printed board housings, APC . 56
Table 39 – Dimensions of the simplex plug connector interfaces, APC . 58
Table 40 – Dimensions of the 4,5 mm duplex plug connector interfaces, APC . 61
Table 41 – Dimensions of the 6,25 mm duplex plug connector interface, APC . 64
Table 42 – Dimensions of the 6,25 mm duplex plug connector interface . 66
Table 43 – Grade . 68
Table 44 – Dimensions of the 6,25 mm duplex adaptor connector interface . 69
Table 45 – Grade of the 6,25 mm duplex adaptor connector . 70
Table 46 – Dimensions of the horizontal duplex plug connector interface . 72
Table 47 – Grade of the horizontal duplex plug connector .
...

IEC 61754-6 ®
Edition 3.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces –
Part 6: Type MU connector family

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces
de connecteurs fibroniques –
Partie 6: Famille de connecteurs de type MU

All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
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IEC 61754-6 ®
Edition 3.0 2022-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic

connector interfaces –
Part 6: Type MU connector family

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces

de connecteurs fibroniques –
Partie 6: Famille de connecteurs de type MU

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-1077-9

– 2 – IEC 61754-6:2022  IEC 2022
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Description . 7
5 Interfaces . 8
Annex A (informative) Configuration of type MU-A connector set . 77
Annex B (informative) Configuration of type MU-B connector set . 78
Annex C (informative) Floating 2-port connector plug . 79
Annex D (informative) Panel dimensions . 80
D.1 General . 80
D.2 Simplex adaptor . 80
D.3 4,5 mm duplex adaptor . 80
D.4 6,25 mm duplex adaptor. 81
D.5 Horizontal duplex adaptor . 81
D.6 4,5 mm 8-port adaptor . 82
Bibliography . 83

Figure 1 – Simplex plug connector interface – Push/pull . 11
Figure 2 – 4,5 mm duplex plug connector interface – Push/pull . 14
Figure 3 – Simplex adaptor connector interface – Push/pull . 17
Figure 4 – Pin gauge for resilient alignment sleeve . 19
Figure 5 – 4,5 mm duplex adaptor connector interface – Push/pull . 20
Figure 6 – 8-port adaptor connector interface – Push/pull . 23
Figure 7 – Plug connector interface – For printed board housings . 25
Figure 8 – Sleeve holder interface . 27
Figure 9 – 2-port backplane housing interface . 29
Figure 10 – 2-port printed board housing interface . 33
Figure 11 – 8-port backplane housing interface . 37
Figure 12 – 8-port printed board housing interface . 41
Figure 13 – Simplex active device receptacle interface . 45
Figure 14 – Detail of the mechanical stop for rigid bore alignment feature . 47
Figure 15 – 4,5 mm duplex active device receptacle interface . 48
Figure 16 – Detail of the mechanical stop for rigid bore alignment feature . 50
Figure 17 – 6,25 mm duplex active device receptacle interface . 51
Figure 18 – Detail of the mechanical stop for rigid bore alignment feature . 53
Figure 19 – Plug connector interface – For printed board housings, APC . 54
Figure 20 – Simplex plug connector interface – Push/pull, APC . 57
Figure 21 – 4,5 mm duplex plug connector interface – Push/pull, APC . 60
Figure 22 – 6,25 mm duplex plug connector interface – Push/pull, APC . 63
Figure 23 – 6,25 mm duplex plug connector interface – Push/pull . 66
Figure 24 – 6,25 mm duplex adaptor connector interface . 69

Figure 25 – Horizontal duplex plug connector interface – Push/pull . 71
Figure 26 – Horizontal duplex adaptor connector interface . 74
Figure A.1 – Configuration of type MU-A connector set . 77
Figure B.1 – Configuration of type MU-B connector set . 78
Figure C.1 – Floating 2-port connector plug . 79
Figure D.1 – Panel cut out . 80
Figure D.2 – Panel cut out . 80
Figure D.3 – Panel cut out . 81
Figure D.4 – Panel cut out . 81
Figure D.5 – Panel cut out . 82

Table 1 – Interfaces . 8
Table 2 – Intermateability of MU-A connectors . 9
Table 3 – Intermateability of MU-B connectors . 9
Table 4 – Intermateability of MU receptacles . 10
Table 5 – Dimensions of the simplex plug connector interface . 12
Table 6 – Grade of the simplex plug connector . 13
Table 7 – Dimensions of the 4,5 mm duplex plug connector interface . 15
Table 8 – Grade of the 4,5 mm duplex plug connector . 16
Table 9 – Dimensions of the simplex adaptor connector interface . 18
Table 10 – Grade of the simplex adaptor connector . 19
Table 11 – Pin gauge dimensions . 19
Table 12 – Dimensions of the 4,5 mm duplex adaptor connector interface . 21
Table 13 – Grade of the 4,5 mm duplex adaptor connector . 22
Table 14 – Dimensions of the 8-port adaptor connector interface . 24
Table 15 – Grade of the 8-port adaptor connector . 25
Table 16 – Dimensions of the plug connector interface . 26
Table 17 – Grade of the plug connector . 27
Table 18 – Dimensions of the sleeve holder interface . 28
Table 19 – Grade of the sleeve holder . 28
Table 20 – Dimensions of the 2-port backplane housing interface . 31
Table 21 – Grade of the 2-port backplane housing . 32
Table 22 – Dimensions of the 2
...