Aerospace series - Connectors, optical, rectangular, multicontact, rack and panel, Quadrax cavity, 2,5 mm diameter ferrule - Operating temperatures - 65 °C to 125 °C (cable dependent) - Flush contacts - Part 002: Specification of performance and contact arrangements

This standard specifies the general characteristics, the conditions for qualification, acceptance and quality assurance, as well as the test programs and groups for fibre sub-assembly contacts in rack and panel connectors, intended for use in a temperature range from  65 °C to 125 °C continuous (cable dependent).
This standard specifies a pair of adaptors to fit with standard Quadrax cavities and EN 4531-101 optical contact.

Luft- und Raumfahrt - Optische Rechtecksteckverbinder, Mehrfachkontakt, Einschub, Quadrax-Kontaktkammer, Ferrulendurchmesser 2,5 mm - Betriebstemperaturen –65 °C bis 125 °C (vom Kabel abhängig) - Bündige Kontakte - Teil 002: Leistungsdaten und Kontaktanordnungen

Diese Norm legt die allgemeinen Eigenschaften, Bedingungen für Qualifikation, Abnahme und Qualitäts-sicherung sowie die Prüfprogramme und –gruppen für LWL Unterbaugruppen in Einschub-Steckverbindern fest, die durchgängig für die Anwendung im Temperaturbereich zwischen 65 °C und 125 °C (vom Kabel abhängig) vorgesehen sind.
Diese Norm legt ein Adapterpaar fest, das einen Zusammenbau von normierten Quadrax-Kontaktkammern und optischem Kontakt nach EN 4531 101 ermöglicht.

Série aérospatiale - Connecteurs, optique, rectangulaire, à contacts multiples, rackables, cavité Quadrax, férule diamètre 2,5 mm - Température d’utilisation - 65 °C à 125 °C (selon câble) - Contacts affleurants - Partie 002 : Spécification de performances et arrangements des contacts

Aeronavtika - Konektorji, optični, pravokotni, večkontaktni, s stojalom in ploščo, vdolbina Quadrax, s premerom kapice 2,5 mm - Delovna temperatura -65 °C do 125 °C (odvisna od kabla) - Izravnani kontakti - 002. del: Specifikacija lastnosti in razporeditev kontaktov

General Information

Status
Published
Publication Date
08-Apr-2008
Withdrawal Date
30-Oct-2008
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 2 - Electrical
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
21-Jan-2024
Completion Date
09-Feb-2026

Relations

Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026

Overview

EN 4626-002:2008 is a European aerospace standard developed by CEN that defines the performance specifications and contact arrangements for optical rectangular multicontact connectors with Quadrax cavities and 2.5 mm diameter ferrules. Specifically designed for rack and panel applications, these connectors enable reliable fiber optic communication within aerospace systems operating under temperature extremes from −65 °C to 125 °C (dependent on cable type). The standard covers the qualification, acceptance, and quality assurance requirements, alongside test programs to ensure consistent product reliability and durability.

This standard forms part of the broader EN 4626 series addressing different aspects of optical connectors for aerospace, ensuring interoperability and safety in critical avionics communication and data transmission systems.

Key Topics

  • Connector Type: Optical rectangular, multicontact rack and panel connectors with Quadrax cavity and flush contacts.
  • Operating Temperature: Wide temperature range from −65 °C to 125 °C, depending on the cable type used, suitable for harsh aerospace environments.
  • Performance Specification: Includes mechanical endurance for at least 500 mating/unmating cycles and 48-hour salt spray corrosion resistance.
  • Contact Arrangements: Detailed layouts (Layouts Q11, 11Q2, Q6, 62Q2, 68Q2) for plug and receptacle mating faces specified for varied configuration needs.
  • Compatibility: Specifies adaptors compatible with standard Quadrax cavities and optical contacts as per EN 4531-101.
  • Mechanical Features: Rear release or rear removable contacts to facilitate maintenance and replacement.
  • Test Programs: Qualification and acceptance testing procedures focused on ensuring performance in aerospace conditions including climatic and mechanical stress tests.

Applications

  • Aerospace and Avionics Systems: The standard is intended for use in aircraft and spacecraft data communication systems where reliable optical fiber connectivity is needed under extreme operating conditions.
  • Rack and Panel Installations: Designed for use in modular electronic racks and panels within aerospace equipment, ensuring easy integration and maintenance.
  • Harsh Environment Communication: Suitable for applications requiring connectors that withstand wide temperature ranges and mechanical endurance, including satellites, military aircraft, and defense electronics.
  • High-Speed Data Transmission: Supporting optical fiber technology for high bandwidth and low signal loss in critical flight and mission systems.

Related Standards

  • EN 4626-001: Technical specification for the same connector series with Quadrax cavities and 2.5 mm ferrules.
  • EN 4626-003 & EN 4626-004: Adaptor specifications for plug and receptacle, respectively, compatible with EN 4626-002 connectors.
  • EN 4626-101 & EN 4626-201: Optical contact sub-assembly product standards for plugs and receptacles to be used within these connectors.
  • EN 4531-101: Optical circular connectors with flush contacts that relate to the optical contacts used in EN 4626-002.
  • ARINC 600: Aeronautical radio standard concerning equipment interfaces, which defines the mechanical limits for mating forces in connector configurations.

Practical Value

Adhering to EN 4626-002:2008 ensures that aerospace optical connectors meet rigorous quality, mechanical endurance, and environmental resistance criteria. This compliance reduces failure risk during critical missions and supports interoperability across aerospace systems. Manufacturers and system integrators benefit by standardizing connection solutions that offer compatible contact arrangements, adaptable housing sizes, and reliable performance under broad climatic conditions - essential for avionics and defense communication infrastructures.


Keywords: EN 4626-002, aerospace optical connectors, Quadrax cavity, 2.5 mm ferrule, rack and panel connectors, operating temperature −65 °C to 125 °C, fiber optic aerospace connectors, contact arrangements, aerospace connector standards, ARINC 600, optical connector testing, ASD-STAN aerospace standard.

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Frequently Asked Questions

EN 4626-002:2008 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Connectors, optical, rectangular, multicontact, rack and panel, Quadrax cavity, 2,5 mm diameter ferrule - Operating temperatures - 65 °C to 125 °C (cable dependent) - Flush contacts - Part 002: Specification of performance and contact arrangements". This standard covers: This standard specifies the general characteristics, the conditions for qualification, acceptance and quality assurance, as well as the test programs and groups for fibre sub-assembly contacts in rack and panel connectors, intended for use in a temperature range from  65 °C to 125 °C continuous (cable dependent). This standard specifies a pair of adaptors to fit with standard Quadrax cavities and EN 4531-101 optical contact.

This standard specifies the general characteristics, the conditions for qualification, acceptance and quality assurance, as well as the test programs and groups for fibre sub-assembly contacts in rack and panel connectors, intended for use in a temperature range from  65 °C to 125 °C continuous (cable dependent). This standard specifies a pair of adaptors to fit with standard Quadrax cavities and EN 4531-101 optical contact.

EN 4626-002:2008 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems; 49.090 - On-board equipment and instruments. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 4626-002:2008 has the following relationships with other standards: It is inter standard links to EN 4626-004:2008, EN 4626-003:2008, EN 4626-201:2009, EN 4626-202:2009, EN 4531-101:2016, EN 4626-101:2008, CEN ISO/TS 11133-2:2003, EN 4626-001:2008. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 4626-002:2008 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-julij-2008
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YGROELQD4XDGUD[VSUHPHURPNDSLFHPP'HORYQDWHPSHUDWXUDƒ&GR
ƒ& RGYLVQDRGNDEOD ,]UDYQDQLNRQWDNWLGHO6SHFLILNDFLMDODVWQRVWLLQ
UD]SRUHGLWHYNRQWDNWRY
Aerospace series - Connectors, optical, rectangular, multicontact, rack and panel,
Quadrax cavity, 2,5 mm diameter ferrule - Operating temperatures - 65 °C to 125 °C
(cable dependent) - Flush contacts - Part 002: Specification of performance and contact
arrangements
Luft- und Raumfahrt - Optische Rechtecksteckverbinder, Quadrax-Kontaktkammer,
Durchmesser 2,5 mm Ferrule - Betriebstemperaturen - 65 °C bis 125 °C (vom Kabel
abhängig) - Bündige Kontakte - Teil 002: Leistungsdaten und Kontaktanordnungen
Série aérospatiale - Connecteurs, optique, rectangulaire, à contacts multiples, rackables,
cavité Quadrax, férule diamètre 2,5 mm - Température d’utilisation - 65 °C à 125 °C
(selon câble) - Contacts affleurants - Partie 002 : Spécification de performances et
arrangements des contacts
Ta slovenski standard je istoveten z: EN 4626-002:2008
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 4626-002
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2008
ICS 49.060
English Version
Aerospace series - Connectors, optical, rectangular,
multicontact, rack and panel, Quadrax cavity, 2,5 mm diameter
ferrule - Operating temperatures - 65 °C to 125 °C (cable
dependent) - Flush contacts - Part 002: Specification of
performance and contact arrangements
Série aérospatiale - Connecteurs, optique, rectangulaire, à Luft- und Raumfahrt - Optische Rechtecksteckverbinder,
contacts multiples, rackables, cavité Quadrax, férule Quadrax-Kontaktkammer, Durchmesser 2,5 mm Ferrule -
diamètre 2,5 mm - Température d'utilisation - 65 °C à 125 Betriebstemperaturen - 65 °C bis 125 °C (vom Kabel
°C (selon câble) - Contacts affleurants - Partie 002 : abhängig) - Bündige Kontakte - Teil 002: Leistungsdaten
Spécification de performances et arrangements des und Kontaktanordnungen
contacts
This European Standard was approved by CEN on 28 December 2007.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4626-002:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 List of product standard .5
5 General characteristics .5
5.1 Climatic characteristics .5
5.2 Mechanical characteristics .5
6 Housing sizes and contact arrangements .5
7 Combination.11
8 Filler plugs and dummy contacts.11

Foreword
This document (EN 4626-002:2008) has been prepared by the Aerospace and Defence Industries Association
of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2008, and conflicting national standards shall be withdrawn at
the latest by October 2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This standard was reviewed by the Domain Technical Coordinator of ASD-STAN's Electrical Domain.
After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STAN's General
Process Manual, this standard has received approval for Publication.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia,
...

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