FprEN 4733-003

Aerospace series - Rectangular optical connector, modular - Operating temperature 125 °C, for EN 4734-10X: MT contacts - Part 003: Module double MT contacts, series 2 - Product standard

This document specifies the characteristics of module double contacts MT for EN 4734-10X optical MT contacts, used in the family of rectangular, modular, connectors EN 4165 series.

Luft- und Raumfahrt - Optischer Rechtecksteckverbinder in modularer Bauweise - Betriebstemperatur 125 °C, für EN 4734-10X: MT Kontakte - Teil 003: Modul mit zwei Kontaktkammern für MT-Kontakte, Serie 2 - Produktnorm

Série aérospatiale - Connecteur optique rectangulaire, modulaire - Température d’utilisation 125 °C, pour EN 4734-10X: contacts MT - Partie 003 : Module à doubles contacts MT, série 2 - Norme de produit

Le présent document spécifie les caractéristiques d’un module à doubles contacts MT pour les contacts optiques MT EN 4734-10X, utilisés dans la famille des connecteurs rectangulaires modulaires de la série EN 4165.

Aeronavtika - Pravokotni optični konektor, modularni - Delovna temperatura 125 °C, za EN 4734 10X: MT kontakti - 003. del: Modul z dvojnimi MT kontakti, serija 2 - Standard izdelka

General Information

• Status: Not Published
• Publication Date: 19-Mar-2025
• ICS: 49.090 - On-board equipment and instruments
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 10 - Optical
• Current Stage: 5098 - Decision to abandon - Formal Approval
• Start Date: 18-Mar-2025
• Completion Date: 14-Apr-2025
• Ref Project: kSIST FprEN 4733-003:2024 - Aerospace series - Rectangular optical connector, modular - Operating temperature 125 °C, for EN 4734 10X: MT contacts - Part 003: Module double MT contacts, series 2 - Product standard

Overview

The FprEN 4733-003 is a European aerospace product standard developed by the Aerospace and Defence Industries Association of Europe (ASD-STAN) and submitted to CEN for enquiry. This standard specifies the detailed characteristics of module double MT contacts designed for rectangular, modular optical connectors operating at 125 °C, compliant with EN 4734-10X MT contacts series. These connectors are part of the EN 4165 modular family widely used in aerospace applications.

This document covers design, dimensions, materials, marking, and technical specifications critical for aerospace-grade optical fiber connectivity. It facilitates interoperability, reliable performance, and conformity to strict aerospace environmental conditions.

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Key Topics

• Scope and Application

  • Defines specifications for double MT contact modules in modular optical connectors.
  • Applies to male and female modules conforming to the EN 4165 series connectors used in aerospace on-board equipment.

• Dimensions and Masses

  • Detailed interface dimensions for male and female modules with tight tolerances.
  • Maximum mass specifications: male modules up to 1.8 g; female modules up to 2.0 g.
  • Visual markers may be included for cavity identification to ensure proper polarization and mating.

• Material and Surface Treatment

  • Materials and surface finishes must adhere to established criteria in related standards (prEN 4733-002).
  • Focus on durability and resistance to harsh aerospace environmental factors at elevated temperatures of 125 °C.

• Optical, Mechanical, and Climatic Performance

  • Compliance with performance requirements of prEN 4733-001 ensures stable optical transmission, mechanical robustness, and resistance under climatic stresses (temperature, vibration, humidity).

• Designation and Marking

  • Modules must be clearly marked with identification codes, manufacture dates (year and week), and manufacturer trademarks.
  • Marking schemes follow EN 2424, supporting traceability and quality assurance.

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Applications

• Aerospace Optical Connectivity

  • These double MT contact modules are designed for high-density optical fiber connections onboard aircraft, spacecraft, and other aerial vehicles.
  • Designed to withstand temperatures up to 125 °C enabling reliable signal transmission in extreme thermal environments common in aerospace systems.

• Modular Connector Systems

  • Fits within modular connector families (EN 4165 series), allowing for flexible system design and easier maintenance in aerospace electronic and optical equipment.
  • Supports multi-contact optical fiber interfaces critical for secure, high-speed data links.

• Defense and Space Industry

  • Suitable for avionics communications, satellite systems, and military aerospace applications where stringent standards for reliability and performance are mandatory.

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Related Standards

• EN 4165-003

  • Defines product standards for electrical and optical rectangular modular connectors, including series 2 and 3 modules, operating at higher temperature ratings.

• EN 4734-101 & EN 4734-102

  • Provide technical specifications for 12-way MT male and female optical fiber contacts, respectively, which are components integral to the modules specified in FprEN 4733-003.

• prEN 4733-001 & prEN 4733-002

  • Cover technical and performance specifications for rectangular optical connectors operating at 125 °C with MT contacts, outlining testing and quality benchmarks.

• EN 2424

  • Details aerospace product marking requirements ensuring standardization of identification, traceability, and compliance management.

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This standard represents a critical step in harmonizing optical connector technologies across the European aerospace sector, promoting standardized, robust, and high-performance optical solutions essential for advanced aerospace communication networks. Manufacturers, designers, and aerospace engineers can utilize FprEN 4733-003 to ensure modular optical connector compatibility and operational reliability in extreme temperature conditions typical of aerospace environments.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 4733-003:2024
01-maj-2024
Aeronavtika - Pravokotni optični konektor, modularni - Delovna temperatura 125
°C, za EN 4734 10X: MT kontakti - 003. del: Modul z dvojnimi MT kontakti, serija 2 -
Standard izdelka
Aerospace series - Rectangular optical connector, modular - Operating temperature 125
°C, for EN 4734 10X: MT contacts - Part 003: Module double MT contacts, series 2 -
Product standard
Luft- und Raumfahrt - Optischer Rechtecksteckverbinder in modularer Bauweise,
Betriebstemperatur 125 °C, für EN XXXX-10x-MT-Kontakte - Teil 003: Modul-Doppel-
MT-Kontakte, Serie 2 - Produktnorm
Série aérospatiale - Connecteur optique rectangulaire, modulaire - Température
d'utilisation 125 °C, pour EN 4734-10X : contacts MT - Partie 003 : Module à doubles
contacts MT, série 2 - Norme de produit
Ta slovenski standard je istoveten z: prEN 4733-003
ICS:
49.090 Oprema in instrumenti v On-board equipment and
zračnih in vesoljskih plovilih instruments
oSIST prEN 4733-003:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 4733-003:2024
oSIST prEN 4733-003:2024
DRAFT
EUROPEAN STANDARD
prEN 4733-003
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2023
ICS 49.090
English Version
Aerospace series - Rectangular optical connector, modular
- Operating temperature 125 °C, for EN 4734 10X: MT
contacts - Part 003: Module double MT contacts, series 2 -
Product standard
Luft- und Raumfahrt - Optischer
Rechtecksteckverbinder in modularer Bauweise,
Betriebstemperatur 125 °C, für EN XXXX-10x-MT-
Kontakte - Teil 003: Modul-Doppel-MT-Kontakte, Serie
2 - Produktnorm
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4733-003:2023 E
worldwide for CEN national Members.

oSIST prEN 4733-003:2024
prEN 4733-003:2023 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 5
4.1 Dimensions and masses . 5
4.2 Material and surface treatment . 8
4.3 Optical, mechanical and climatic characteristics . 8
5 Designation . 9
6 Marking . 9
7 Technical specification . 9

oSIST prEN 4733-003:2024
prEN 4733-003:2023 (E)
European foreword
This document (prEN 4733-003:2023) has been prepared by the Aerospace and Defence Industries
Association o
...