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

Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von Lichtwellenleiter-Steckverbindern - Teil 6: Steckverbinderfamilie der Bauart MU

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

Optični spojni elementi in pasivne komponente - Vmesniki za optične konektorje - 6. del: Konektorska družina vrste MU - Dopolnilo A1

General Information

Status
Not Published
Publication Date
16-May-2027
Current Stage
4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
Start Date
09-Jan-2026
Completion Date
09-Jan-2026

Relations

Effective Date
14-Jan-2025

Overview

The EN IEC 61754-6:2022/prA1:2025 standard, titled "Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 6: Type MU connector family", is an important amendment managed by the International Electrotechnical Commission (IEC) and CLC (European Committee for Electrotechnical Standardization). This document focuses on the Type MU connector family used in fibre optic interconnecting devices and passive components. The amendment refines connector interface dimensions, grades, and technical specifications to enhance compatibility and performance in fibre optic connectivity.

Aimed at improving fiber optic connector interface standardization globally, this amendment provides updated physical dimensions, connector grades, and references to relevant IEC standards. It supports the ongoing development and deployment of high-performance fibre optic networking solutions.

Key Topics

  • Type MU Connector Family
    Detailed specifications for the Type MU connector interfaces, including simplex and duplex plugs, address physical dimensions, polishing grades, and interface parameters.

  • Connector Interface Dimensions
    Precise dimensional data for simplex and duplex Type MU connectors are defined, ensuring interoperability and standard compliance. The amendment updates tables covering dimensions such as ferrule size, angles, radii, and compression forces.

  • Connector Grades and Performance
    The document revises connector grades for Type MU plugs. It refers to external standards such as IEC 61755-3 (dispersion unshifted single-mode fibers) and IEC 63267-3 (enhanced macro bend multimode fibers) for detailed grade specifications. Grade A is currently not specified, but grades B to D are aligned with these referenced IEC series.

  • Updated Technical References
    The amendment removes certain outdated notes and references, including the IEC 61755-6-1 series, replacing them with updated links to newer standards for improved guidance.

  • Mechanical and Optical Characteristics
    Specifications include ferrule compression force, surface finish requirements (Ra: ≤0.0002), and polishing angles to optimize optical performance and mechanical reliability.

Applications

The EN IEC 61754-6:2022/prA1:2025 standard is critical for manufacturers, designers, and installers involved in fibre optic communication systems, ensuring compatibility and quality for Type MU connectors used in:

  • Telecommunications networks
    Enhancing high-speed data transmission by standardizing the fiber connector interfaces for optical network equipment.

  • Data centers and enterprise networks
    Providing reliable interconnection components to support high-density, high-performance fiber cabling solutions.

  • Test and measurement equipment
    Ensuring consistent interface dimensions for connectors used in optical testing and diagnostic tools.

  • Passive optical components
    Standardized connectors for splitters, couplers, and other passive devices in fiber optic systems.

  • Industrial and medical fiber optic applications
    Offering robust, precise, and repeatable connector interfaces suited for specialized optical environments.

Related Standards

The EN IEC 61754-6:2022/prA1:2025 amendment integrates and cross-references several important standards in the fibre optic domain:

  • IEC 61754-6 – Core standard defining the Type MU connector family interfaces.
  • IEC 61755-3 series – Specifications related to connector parameters for dispersion unshifted single-mode physically contacting fibers.
  • IEC 63267-3 series – Connector interface parameters for enhanced macro bend multimode fibers with 50 µm core diameter.
  • IEC 61300-3-22 – Test methods related to mechanical characteristics such as ferrule compression force.
  • Removal of IEC 61755-6-1 reference – This indicates the updating and rationalization of related test and interface guidance within the newer standard framework.

Keywords: fibre optic connectors, Type MU connector, fibre optic interconnecting devices, optical connector interfaces, IEC fibre optic standards, simplex plug, duplex plug, optical network components, connector grades, fibre optic passive components, IEC 61754-6 amendment, fibre connector dimensions, fibre optic standards EN IEC 61754-6.

Draft

EN IEC 61754-6:2022/oprA1:2025

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Frequently Asked Questions

EN IEC 61754-6:2022/prA1:2025 is a draft published by CLC. Its full title is "Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 6: Type MU connector family". This standard covers: Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 6: Type MU connector family

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

EN IEC 61754-6:2022/prA1:2025 is classified under the following ICS (International Classification for Standards) categories: 33.180.20 - Fibre optic interconnecting devices. The ICS classification helps identify the subject area and facilitates finding related standards.

EN IEC 61754-6:2022/prA1:2025 has the following relationships with other standards: It is inter standard links to EN IEC 61754-6:2022. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN IEC 61754-6:2022/prA1:2025 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-december-2025
Optični spojni elementi in pasivne komponente - Vmesniki za optične konektorje -
6. del: Konektorska družina vrste MU - Dopolnilo A1
Fibre optic interconnecting devices and passive components - Fibre optic connector
interfaces - Part 6: Type MU connector family
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von
Lichtwellenleiter-Steckverbindern - Teil 6: Steckverbinderfamilie der Bauart MU
Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces de
connecteurs fibroniques - Partie 6: Famille de connecteurs de type MU
Ta slovenski standard je istoveten z: EN IEC 61754-6:2022/prA1:2025
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

86B/5125/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61754-6/AMD1 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-10-17 2026-01-09
SUPERSEDES DOCUMENTS:
86B/4997/CD, 86B/5034A/CC
IEC SC 86B : FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
SECRETARIAT: SECRETARY:
Japan Mr Ryo Koyama
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Amendment 1 - Fibre optic interconnecting devices and passive components - Fibre optic
connector interfaces - Part 6: Type MU connector family

PROPOSED STABILITY DATE: 2032
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

IEC CDV 61754-6/AMD1 © IEC 2025
1 INTERNATIONAL ELECTROTECHNICAL COMMISSION
3 _____________
5 IEC 61754-6
6 Edition 3.0 2022-02
7 Fibre optic interconnecting devices and passive components – Fibre optic connector
8 interfaces - Part 6: Type MU connector family
9 AMENDMENT 1
10 2 Normative references
11 Add the following references:
12 IEC 61755-3 (all parts), Fibre optic interconnecting devices and passive components - Connector optical interfaces:
13 Connector parameters of dispersion unshifted single-mode physically contacting fibres
14 IEC 63267-3 (all parts), Fibre optic interconnecting devices and passive components – Connector optical interfaces
15 for enhanced macro bend multimode fibres: Connector parameters of physically contacting 50 µm core diameter
16 fibres
18 5 Interfaces
19 Table 5 – Dimensions of the simplex plug connector interface
20 In footnote b, replace “L, M and V” with “I, P, Q and R”.
22 Table 6 – Grade of the simplex plug connector
23 In the row for grade A, replace the content in the second and third column with “Grade not
24 specified at this time”.
25 In the rows for grades B to D, replace the content in the second and third column with “Refer to
26 IEC 61755-3 series”.
27 In the rows for grades B and C , replace the minimum and maximum values or the text with
m m
28 “Refer to IEC 63267-3 series”.
29 Delete note b “See IEC 61755-6-1 for guidance”.
31 Table 7 – Dimensions of the 4,5 mm duplex plug connector interface
32 In footnote b, replace “L, M and V” with “I, P, Q and R”.
IEC CDV 61754-6/AMD1 © IEC 2025
35 Table 8 – Grade of the 4,5 mm duplex plug connector
36 In the row for grade A, replace the content in the second and third column with “Grade not
37 specified at this time”.
38 In the rows for grades B to D, replace the content in the second and third column with “Refer to
39 IEC 61755-3 series”.
40 In the rows for grades B and C , replace the minimum and maximum values or the text with
m m
41 “Refer to IEC 63267-3 series”.
42 Delete note b “See IEC 61755-6-1 for guidance”.
44 Table 11 – Pin gauge dimensions
45 In the last column, row LK, replace “grade N4 (0,2 μm radius)” with “Ra: ≤0.000 2”.
47 Table 17 – Grade of the plug connector
48 In the row for grade A, replace the content in the second and third column with “Grade not
49 specified at this time”.
50 In the rows for grades B to D, replace the content in the second and third column with “Refer to
51 IEC 61755-3 series”.
52 In the rows for grades B and C , replace the minimum and maximum values or the text with
m m
53 “Refer to IEC 63267-3 series”.
54 Delete note b “See IEC 61755-6-1 for guidance”.
56 Figure 8 – Sleeve holder int
...

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