SIST EN 4641-101:2015
(Main)Aerospace series - Cables, optical 125 μm diameter cladding - Part 101: Tight structure 62,5 μm core GI fibre 0,9 mm outside diameter - Product standard
Aerospace series - Cables, optical 125 μm diameter cladding - Part 101: Tight structure 62,5 μm core GI fibre 0,9 mm outside diameter - Product standard
This product standard specifies the general characteristics, conditions for qualification, acceptance and quality assurance for a fibre optic cable with a 62,5/125 µm Graded Index fibre core, 0,9 mm outside diameter and of tight buffer construction, for inside wiring applications.
Luft- und Raumfahrt - Lichtwellenleiterkabel, Manteldurchmesser 125 μm - Teil 101: 62,5 μm Kerndurchmesser, Gradientenindexfaser Außendurchmesser 0,9 mm Leitung mit festem Aufbau - Produktnorm
Série aérospatiale - Câbles, optiques, diamètre extérieur de la gaine optique 125 μm - Partie 101 : Câble à structure serrée, fibre à gardient d'indice cœur 62,5 μm, diamètre extérieur 0,9 mm - Norme de produit
Aeronavtika - Kabli, optični, zunanji premer obloge 125 µm - 101. del: Kompaktna struktura 62,5 µm, zunanji premer vlakna 0,9 mm - Standard za proizvod
General Information
- Status
- Published
- Publication Date
- 07-May-2015
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 15-Apr-2015
- Due Date
- 20-Jun-2015
- Completion Date
- 08-May-2015
Overview
EN 4641-101:2015 is a CEN product standard in the Aerospace series that defines the requirements for a tight‑buffered optical fibre cable intended for inside wiring in aircraft and aerospace equipment. The standard covers a 62.5/125 µm graded‑index (GI) fibre core, with a 0.9 mm outside diameter, and specifies general characteristics, qualification, acceptance and quality assurance criteria for manufacturers, qualification laboratories and procurement teams.
Key topics and technical requirements
- Construction: Tight buffer construction with silica core, silicone primary coating and a halogen‑free high‑temperature outer jacket.
- Dimensional & optical limits:
- Core: 62.5 µm ± 3 µm (as specified in the fibre test section).
- Concentricity, non‑circularity and dimensional tolerances and concentricity error limits are defined to ensure consistent terminations and optical performance.
- Attenuation: ≤ 4 dB/km at 850 nm, ≤ 2 dB/km at 1300 nm (measured at 20 °C).
- Numerical aperture: 0.275 ± 0.015.
- Bandwidth: ≥ 160 MHz·km (@ 850 nm) and ≥ 500 MHz·km (@ 1300 nm).
- Proof test: > 1%.
- Mechanical & environmental:
- Operating temperature range: −55 °C to +125 °C.
- Cable mass: ≤ 1 g/m.
- Minimum bend radius (installation and long term): ~10 mm (~10× outside diameter); storage: ~20 mm.
- Minimum tensile strength: > 20 N.
- Thermal life ≥ 100,000 h (thermal ageing limits defined).
- Qualification & tests: Extensive test matrix including thermal cycling, accelerated ageing, humidity resistance, abrasion, micro‑bending, tensile, impact, torsion, crush, smoke density (Dm < 200), toxicity, and fluid resistance. Acceptance criteria and sampling are defined.
- Delivery & storage: Minimum delivery length 100 m; storage conditions (humidity < 90%, temp −55 °C to 75 °C, tensile load < 20 N).
Applications and who uses it
- Used for inside wiring in aircraft, avionics racks, cabin and systems installations where small‑diameter, tight‑buffered multimode optical cable is required.
- Primary users:
- Aerospace cable manufacturers and suppliers (design and quality teams).
- Avionics and aircraft systems integrators, harness designers and maintenance organizations.
- Procurement, qualification labs and certification bodies validating cable performance to aerospace requirements.
Related standards
- EN 3745 series (optical fibres and cables - test methods)
- EN 2812 (stripping of electric cables)
- EN 3909 (test fluids)
- EN 3838 (user‑applied markings)
- EN 9133 (quality management / qualification)
- TIA/EIA and ANSI optical fibre test references (e.g., TIA/EIA‑455 series)
EN 4641-101:2015 is a practical product standard for ensuring consistent performance, reliability and traceability of tight‑buffered 62.5/125 µm multimode cables used in aerospace inside‑wiring applications.
Frequently Asked Questions
SIST EN 4641-101:2015 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Cables, optical 125 μm diameter cladding - Part 101: Tight structure 62,5 μm core GI fibre 0,9 mm outside diameter - Product standard". This standard covers: This product standard specifies the general characteristics, conditions for qualification, acceptance and quality assurance for a fibre optic cable with a 62,5/125 µm Graded Index fibre core, 0,9 mm outside diameter and of tight buffer construction, for inside wiring applications.
This product standard specifies the general characteristics, conditions for qualification, acceptance and quality assurance for a fibre optic cable with a 62,5/125 µm Graded Index fibre core, 0,9 mm outside diameter and of tight buffer construction, for inside wiring applications.
SIST EN 4641-101:2015 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.
SIST EN 4641-101:2015 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.L]YRG49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 4641-101:2015SIST EN 4641-101:2015en,fr,de01-junij-2015SIST EN 4641-101:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4641-101
April 2015 ICS 49.090 English Version
Aerospace series - Cables, optical 125 µm diameter cladding - Part 101: Tight structure 62,5 µm core GI fibre 0,9 mm outside diameter - Product standard
Série aérospatiale - Câbles, optiques, diamètre extérieur de la gaine optique 125 µm - Partie 101 : Câbles à structure serrée, fibre à gradient d'indice coeur 62,5 µm, diamètre extérieur 0,9 mm - Norme de produit
Luft- und Raumfahrt - Lichtwellenleiterkabel, Mantelaußendurchmesser 125 µm - Teil 101: Vollader, 62,5 µm GI-Faser, Kabelaußendurchmesser 0,9 mm
- Produktnorm This European Standard was approved by CEN on 29 November 2014.
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-CENELEC 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-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4641-101:2015 ESIST EN 4641-101:2015
Page coreword .3 1 Scope .4 2 kormative references .4 3 qerms and definitions .4 4 oequired characteristics .4 5 Materials and description .5 6 qest methods and performances in accordance with bk mqno-100 .5 q nuality assurance . 12 8 aesignationf marking and colours . 12 9 aelivery conditions . 13 10 ptorage . 13
1 Scope This product standard specifies the general characteristics, conditions for qualification, acceptance and quality assurance for a fibre optic cable with a 62,5/125 µm Graded Index fibre core, 0,9 mm outside diameter and of tight buffer construction, for inside wiring applications. 2 kormative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2812, Aerospace series — Stripping of electric cables EN 3745-100 (all parts), Aerospace series — Fibres and cables, optical, aircraft use — Test methods — Part 100: General EN 3838, Aerospace series — Requirements and tests on user-applied markings on aircraft electrical cables EN 3909, Aerospace series — Test fluids and test methods for electric components and sub-assemblies EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace standard parts TIA/EIA-455-30-B, FOTP-30 — Frequency Domain Measurement of Multimode 1) TIA/EIA-455-175-B, FOTP175 — Chromatic Dispersion Measurement of Single-mode Optical Fibers by the Differential Phase Shift Method 1) ANSI/EIA 4920000-A, Generic Specification for Optical Waveguide Fibers 1) 3 qerms and definitions For the purposes of this document, the terms and definitions given in EN 3745-100 apply. 4 oequired characteristics The characteristics of the cables, tested according to the methods described hereafter shall comply with the values defined in this product standard. See Table 1. Table 1 mroperty Value Cable mass ≤ 1 g/m Operating temperature −55 °C to 125 °C Minimum bend radius (20 °C) Installation: 10 mm (~10 × outside diameter) Long term: 10 mm (~10 × outside diameter) Storage: 20 mm (~20 × cable outside diameter) Tensile strength > 20 N
1) Published by: National (US) American National Standard Institute (www.ansi.org/). SIST EN 4641-101:2015
hey 1 Optical fibre 2 Primary coating 3 Outer jacket cigure 1 Table 2 blement Material Fibre Core Silica Cladding Primary coating Silicone Outer jacket Halogen free high temperature copolymer
6 qest methods and performances in accordance with bk mqno-100 6.1 lptical fibre tests See Table 3. SIST EN 4641-101:2015
1 300 nm ± 10 nm Spectral width (−3 dB): ≤ 10 nm for 850 nm and 1 300 nm
6.2 Fibre optic cable See Table 4. SIST EN 4641-101:2015
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