EN 4531-101:2016
(Main)Aerospace series - Connectors, optical, circular, single and multipin, coupled by triple start threaded ring - Flush contacts - Part 101: Optical contact for EN 4641 multimode cable -55 °C to 125 °C - Product standard
Aerospace series - Connectors, optical, circular, single and multipin, coupled by triple start threaded ring - Flush contacts - Part 101: Optical contact for EN 4641 multimode cable -55 °C to 125 °C - Product standard
This standard defines the performance and dimensions of optical PC profiled contact for multimode 62,5 micrometres/125 micrometres or 50 micrometres/125 micrometres fibre and (1,8 0,1) mm diameter cable.
Luft- und Raumfahrt - Optische Rundsteckverbinder mit dreigängiger Schraubkupplung - Bündige Kontakte - Teil 101: Optischer Kontakt für Multimode-Kabel nach EN 4641, -55 °C bis 125 °C - Produktnorm
Diese Norm legt die Leistungsdaten und Maße von optischen Kontakten mit PC-Profil für Multimode-Kabel mit Fasern von 62,5 µm/125 µm oder 50 µm/125 µm und einem Durchmesser von (1,8 ± 0,1) mm fest.
Série aérospatiale - Connecteurs optiques circulaires à accouplement par bague filetée à trois filets - Contacts affleurants - Partie101: Contact optique pour câble multimode EN 4641 -55 °C à 125 °C - Norme de produit
Aeronavtika - Konektorji, optični, okrogli, z enim ali več zatiči, priključeni z navojnim obročkom - Izravnani kontakti - 101. del: Optični kontakt za kabel EN 4641 - 55 °C do 125 °C - Standard za proizvod
Ta standard opredeljuje lastnosti in mere optičnih kontaktov s fizičnim stikom za večrodne kable s premerom vlaken 62,5 mikrometrov/125 mikrometrov ali 50 mikrometrov/125 mikrometrov in (1,8 0,1) mm.
General Information
- Status
- Published
- Publication Date
- 12-Jan-2016
- Withdrawal Date
- 30-Jul-2016
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2 - Electrical
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 13-Jan-2016
- Completion Date
- 13-Jan-2016
Relations
- Effective Date
- 12-Mar-2014
- 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
- 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 4531-101:2016 is a CEN product standard in the Aerospace series that specifies the performance and dimensions of an optical PC‑profiled contact for multimode fibre cable (62.5/125 µm or 50/125 µm) with a nominal cable outer diameter of 1.8 ± 0.1 mm. The standard applies to flush optical contacts used in circular aerospace connectors coupled by a triple‑start threaded ring, rated for operation between −55 °C and 125 °C.
Key topics and technical requirements
- Scope & geometry: Defines ferrule, flange, chamfer and overall contact dimensions; ferrule material is zirconia (ZrO2). Contact mass ≤ 1.5 g.
- Contact mechanics: Spring forces specified (e.g., 9 N at 13.5 mm, 13–15 N at 8.5 mm) to ensure reliable mating and optical contact pressure.
- Boots & materials: Long and short blue boots (codes L/S); flange options: Composite (C) or Metal (M).
- Optical performance limits:
- After termination at 25 °C: insertion loss ≤ 0.3 dB for 95% of samples (statistical sampling).
- Across environmental conditions: insertion loss ≤ 0.7 dB for all samples.
- Return loss minimum: 21 dB.
- Qualification & tests: Mandates tests per EN 2591-100, including:
- Thermal endurance (1 000 h at 125 °C)
- Rapid temperature changes (10 cycles between −65 °C and 125 °C)
- Salt mist (48 h)
- Mechanical endurance: 500 mating/unmating cycles with inspection/cleaning every 20 cycles
- Axial load (100 N), cable pull (111 N), torsion (100 cycles @ 40 N), cyclic flexing (100 cycles @ 5 N)
- Impact: insertion loss variation ≤ 0.25 dB after test
- Cleaning & termination: Cleaning per EN 4533-004; termination procedures referenced in TR 4646. No special tools required for manual insertion/extraction, though MIL‑I‑81969/8‑10 tooling may be used.
Applications and users
- Targeted for aerospace optical interconnects in aircraft and avionics where multimode fibre links require rugged, temperature‑rated circular connectors.
- Primary users:
- Aerospace OEMs and system integrators specifying connector interfaces
- Connector and contact manufacturers designing products to aerospace requirements
- Test labs performing qualification to EN 2591 series
- Maintenance and installation technicians following termination and cleaning procedures
Related standards
- EN 4531-001 (technical specification, qualification as a complete connector)
- EN 4531-002 (performance & contact arrangements)
- EN 4533 (fibre optic systems handbook)
- EN 4641 (multimode cable referenced by this contact)
- EN 2591 (test methods series)
- TR 4646 (termination procedure)
Keywords: EN 4531-101, aerospace optical connector, optical contact, multimode 62.5/125, 50/125, 1.8 mm cable, PC profiled contact, flush contacts, triple start threaded ring, −55 °C to 125 °C, zirconia ferrule, insertion loss.
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Frequently Asked Questions
EN 4531-101:2016 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Connectors, optical, circular, single and multipin, coupled by triple start threaded ring - Flush contacts - Part 101: Optical contact for EN 4641 multimode cable -55 °C to 125 °C - Product standard". This standard covers: This standard defines the performance and dimensions of optical PC profiled contact for multimode 62,5 micrometres/125 micrometres or 50 micrometres/125 micrometres fibre and (1,8 0,1) mm diameter cable.
This standard defines the performance and dimensions of optical PC profiled contact for multimode 62,5 micrometres/125 micrometres or 50 micrometres/125 micrometres fibre and (1,8 0,1) mm diameter cable.
EN 4531-101:2016 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 4531-101:2016 has the following relationships with other standards: It is inter standard links to EN 4531-101:2012, EN 2591-307:2012, EN 2591-100:2024, EN 2591-224:2007, EN 2591-6321:2002, EN 4641-103:2025, EN 2591-514:2002, EN 2591-507:2002, EN 2591-403:2025, EN 2591-225:2007, EN 2591-402:2012, EN 4641-401:2024, EN 2591-325:2002, EN 4641-104:2010, EN 2591-217:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4531-101:2016 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Optische Rundsteckverbinder mit dreigängiger Schraubkupplung - Bündige Kontakte - Teil 101: Optischer Kontakt für EN 4641 -55 °C bis 125 °C - ProduktnormSérie aérospatiale - Connecteurs optiques circulaires à accouplement par bague filetée à trois filets - Contacts affleurants - Partie101: Contact optique pour câble multimode EN 4641 -55 °C à 125 °C - Norme de produitAerospace series - Connectors, optical, circular, single and multipin, coupled by triple start threaded ring - Flush contacts - Part 101: Optical contact for EN 4641 multimode cable -55 °C to 125 °C - Product standard49.060Aerospace electric equipment and systems31.220.10Plug-and-socket devices. ConnectorsICS:Ta slovenski standard je istoveten z:EN 4531-101:2016SIST EN 4531-101:2016en,fr,de01-marec-2016SIST EN 4531-101:2016SLOVENSKI
STANDARDSIST EN 4531-101:20121DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4531-101
January
t r s x ICS
v {ä r x r Supersedes EN
v w u sæ s r sã t r s tEnglish Version
Aerospace series æ Connectorsá opticalá circulará single and multipiná coupled by triple start threaded ring æ Flush contacts æ Part
s r sã Optical contact for EN
v x v s multimode cable æ w w
¹C to
s t w
¹C æ Product standard Série aérospatiale æ Connecteurs optiques circulaires à accouplement par bague filetée à trois filets æ Contacts affleurants æ Partie s r sã Contact optique pour câble multimode EN
v x v s æ w w
¹C à
s t w
¹C æ Norme de produit Luftæ und Raumfahrt æ Optische Rundsteckverbinder mit dreigängiger Schraubkupplung æ Bündige Kontakte æ Teil
s r sã Optischer Kontakt für EN
v x v sæMultimodekabelá æ w w
¹C bis
s t w
¹C æ Produktnorm This European Standard was approved by CEN on
z June
t r s wä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
v w u sæ s r sã t r s x ESIST EN 4531-101:2016
Page European Foreword . 3 1 Scope . 4 2 Normative references . 4 3 Termini dimensions . 5 4 General dimensions of the optical termini . 6 4.1 Contact dimension and mass . 6 4.2 Boot dimension . 7 4.3 Material . 7 5 Technical specification . 8 6 Tests according to EN 2591-100 . 8 7 Cleaning instructions . 9 8 Tooling . 9 9 Termination instructions . 10 10 Designation. 10 Bibliography . 11
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