EN 61754-8:1997

Fibre optic connector interfaces - Part 8: Type CF08 connector family

Defines the standard interface dimensions for the type CF08 family of connectors which is a single-way plug connector, characterized by a conical ferrule butting against a sphere. It includes a push -pull coupling mechanism and a ferrule spring loaded in the direction of the optical axis. The plug has a single male key which may be used to orient and limit the relative rotation between the connector and the component to which it is mated.

Steckgesichter von Lichtwellenleiter-Steckverbindern - Teil 8: Bauart CF08 Steckverbinderfamilie

Interfaces de connecteurs pour fibres optiques - Partie 8: Familles de connecteurs de type CF08

Définit les dimensions d'interface normalisées pour la famille de connecteurs de type CF08, composés d'une fiche monovoie et caractérisé par une ferrule conique, butant contre une sphère. Il comporte un mécanisme de verrouillage pousser-tirer et une ferrule comprimée par un ressort dans la direction de l'axe optique. La fiche a une clavette mâle unique qui peut être utilisée pour orienter et limiter la rotation relative entre le connecteur et le composant avec lequel il est accouplé.

Fibre optic connector interfaces - Part 8: Type CF08 connector family (IEC 61754-8:1996)

General Information

• Status: Published
• Publication Date: 03-Sep-1997
• Withdrawal Date: 31-May-1998
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: CLC/TC 86BXA - Fibre optic interconnect, passive and connectorised components
• Drafting Committee: IEC/SC 86B - IEC_SC_86B
• Parallel Committee: IEC/SC 86B - IEC_SC_86B
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 04-Sep-1997
• Completion Date: 04-Sep-1997
• Ref Project: SIST EN 61754-8:1999 - Fibre optic connector interfaces -- Part 8: Type CF08 connector family

Relations

• Referred By: EN 61753-021-3:2013 - Fibre optic interconnecting devices and passive components - Performance standard - Part 021-3: Single-mode fibre optic connectors for category U - Uncontrolled environment
• Effective Date: 03-Feb-2026
• Referred By: EN 60874-1:2012 - Fibre optic interconnecting devices and passive components - Connectors for optical fibres and cables - Part 1: Generic specification
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 62148-17:2023 - Fibre optic active components and devices - Package and interface standards - Part 17: Transmitter and receiver components with dual coaxial RF connectors
• Effective Date: 03-Feb-2026
• Referred By: EN 61753-121-2:2017 - Fibre optic interconnecting devices and passive components - Performance standard - Part 121-2: Simplex and duplex cords with single-mode fibre and cylindrical ferrule connectors for category C - Controlled environment
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 62148-22:2023 - Fibre optic active components and devices - Package and interface standards - Part 22: 25 Gbit/s directly modulated laser packages with temperature control unit
• Effective Date: 03-Feb-2026
• Referred By: EN 62148-15:2010 - Fibre optic active components and devices - Package and interface standards - Part 15: Discrete vertical cavity surface emitting laser packages
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 61757-1-1:2020 - Fibre optic sensors - Part 1-1: Strain measurement - Strain sensors based on fibre Bragg gratings
• Effective Date: 03-Feb-2026
• Referred By: EN 61300-3-22:2011 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-22: Examinations and measurements - Ferrule compression force
• Effective Date: 03-Feb-2026
• Referred By: EN 61753-121-2:2010 - Fibre optic interconnecting devices and passive components - Performance standards - Part 121-2: Simplex and duplex cords with singlemode fibre and cylindrical ferrule connectors for category C - Controlled environment
• Effective Date: 03-Feb-2026
• Referred By: EN 61300-3-33:2012 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-33: Examinations and measurements - Withdrawal force from a resilient alignment sleeve using gauge pins
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 62148-1:2018 - Fibre optic active components and devices - Package and interface standards - Part 1: General and guidance
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 61300-3-46:2025 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-46: Examinations and measurements - Bore diameter in rectangular ferrules
• Effective Date: 03-Feb-2026
• Referred By: EN 61753-057-2:2013 - Fibre optic interconnecting devices and passive components - Performance standard - Part 057-2: Single mode fibre plug-receptacle style optical fuse for category C - Controlled environment
• Effective Date: 03-Feb-2026
• Referred By: EN 61753-059-2:2013 - Fibre optic interconnecting devices and passive components - Performance standard - Part 059-2: Single-mode fibre plug-receptacle style optical limiter for category C - Controlled environment
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 61753-051-02:2022 - Fibre optic interconnecting devices and passive components - Performance standard - Part 051-02: Plug-receptacle style single-mode fibre fixed optical attenuators for category C - Controlled environments
• Effective Date: 03-Feb-2026

Overview

EN 61754-8:1997 (published by CLC) specifies the standard mechanical interface dimensions and basic mechanical features for the CF08 connector family used in fibre optic systems. Identical in intent to IEC 61754-8:1996, this standard defines the single-way plug form, mating adapter and receptacle interfaces so that CF08 connectors are mechanically intermateable and consistent across manufacturers.

Key topics and technical requirements

• Connector family definition: CF08 is a single-way plug connector using a conical ferrule that butts against a 4 mm diameter sphere (or equivalent) to establish optical contact.
• Coupling and mechanics: The connector employs a push–pull coupling mechanism, a ferrule spring-loaded along the optical axis, and a single male key to orient and limit relative rotation.
• Defined interfaces:
  • Interface 8-1: Plug connector interface
  • Interface 8-2: Adapter for plug/adapter/plug configurations
  • Interface 8-3: Receptacle for plug/receptacle/optical component configurations
• Dimensional specifications: Detailed limit dimensions and tolerances are given in tabulated form (plug dimensions in Table 1; adapter/receptacle dimensions in Table 2) and illustrated in figures for accurate mechanical design.
• Mating conditions and performance: The standard specifies ferrule compression behavior when mated (compression force range 8 N to 18 N), permitted axial movement (ferrule can enter at least 0.15 mm when mated; free plug can extend at least 0.35 mm), and options for adapter designs (elastomeric contact element vs. non-elastomeric for large-core fibres).
• Options and notes: Special provisions for fibres with core diameter >400 µm (specific geometric allowances) and guidance on elastomeric versus non-elastomeric adapter designs are included.

Applications and who uses this standard

• Connector and component manufacturers: to design CF08 plugs, adapters and receptacles that are mechanically interchangeable and compliant.
• System integrators and OEMs: for specifying compatible connector hardware in fibre optic modules, transceivers and passive optical components.
• Test labs and quality assurance: to verify dimensional conformity, mating force, and mechanical fit during inspection.
• Procurement and standards writers: to ensure interoperability and reduce integration risk by referencing a recognized interface standard.

Practical benefits include reliable mechanical alignment, consistent optical mating, simplified sourcing, and reduced risk of incompatibility across suppliers.

Related standards

• IEC 61754-8:1996 (equivalent international document referenced by EN 61754-8)
• Other parts of the EN/IEC 61754 series define interfaces for different connector families and may be referenced when designing multi-connector systems.

Keywords: EN 61754-8:1997, CF08 connector, fibre optic connector interfaces, conical ferrule, push-pull coupling, ferrule spring, plug/adapter/receptacle, interface dimensions, CLC.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-1999
Fibre optic connector interfaces - Part 8: Type CF08 connector family (IEC 61754-
8:1996)
Fibre optic connector interfaces -- Part 8: Type CF08 connector family
Steckgesichter von Lichtwellenleiter-Steckverbindern -- Teil 8: Bauart CF08
Steckverbinderfamilie
Interfaces de connecteurs pour fibres optiques -- Partie 8: Familles de connecteurs de
type CF08
Ta slovenski standard je istoveten z: EN 61754-8:1997
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
1754-8
INTERNATIONAL
Première édition
STANDARD
First edition
1996-10
Interfaces de connecteurs
pour fibres optiques –
Partie 8:
Familles de connecteurs de type CF08
Fibre optic connector interfaces –
Part 8:
CF08 connector family
 CEI 1996  Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized
utilisée sous quelque forme que ce soit et par aucun procédé, in any form or by any means, electronic or mechanical,
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1754-8 © IEC:1996 – 3 –
CONTENTS
Page
FOREWORD. 5
Clause
1 Scope. 7
2 Description. 7
3 Interfaces . 7
Tables
1 Dimensions of the plug connector interface. 11
2 Dimensions of adaptor and receptacle interfaces . 15
Figures
1 Plug connector interface . 9
2 Adaptor and receptacle interfaces. 13

1754-8 © IEC:1996 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
__________
FIBRE OPTIC CONNECTOR INTERFACES –
Part 8: Type CF08 connector family
FOREWORD
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