EN 4604-003:2025

Aerospace series - Cable, electrical, for signal transmission - Part 003: Cable, coaxial, 50 ohms, 200 °C, type WZ - Product standard

This document specifies the characteristics of UV laser printable coaxial cables, 50 Ω, type WZ, for use in aircraft electrical systems at operating temperatures between −65 °C and 200 °C and specially for high frequency up to 6 GHz.
The document encloses also a reinforced cable version (code R) which is used for sensitive systems with controlled VSWR.

Luft- und Raumfahrt - Elektrische Leitungen für Signalübertragungen - Teil 003: Koaxialkabel, 50 Ohm, 200 °C, Typ WZ - Produktnorm

Dieses Dokument legt die erforderlichen Eigenschaften von UV-laserbedruckbaren Koaxialkabeln, 50 Ω, Typ WZ, zur Verwendung in elektrischen Systemen von Luftfahrzeugen bei Betriebstemperaturen von −65 °C bis 200 °C und insbesondere für hohe Frequenzen bis 6 GHz fest.
Das Dokument enthält auch eine verstärkte Kabelausführung (Kennbuchstabe R), die für empfindliche Systeme mit kontrolliertem Stehwellenverhältnis (VSWR, en: Voltage Standing Wave Ratio) verwendet wird.

Série aérospatiale - Câbles électriques pour transmission de signaux - Partie 003 : Câble coaxial, 50 ohms, 200 °C, type WZ - Norme de produit

Le présent document spécifie les caractéristiques requises pour les câbles coaxiaux marquables par laser UV 50 Ω, de type WZ, destinés à une utilisation dans les systèmes électriques des aéronefs à des températures de fonctionnement comprises entre −65 °C et 200 °C, et notamment à haute fréquence jusqu’à 6 GHz.
Le document comprend également une version de câble renforcée (code R) qui est utilisée pour les systèmes sensibles avec un rapport d'ondes stationnaires (VSWR, Voltage Standing Wave Ratio) contrôlé.

Aeronavtika - Kabli, električni, za prenos signala - 003. del: Kabli, koaksialni, 50 ohm, 200 °C, tip WZ - Standard za proizvod

Ta dokument določa lastnosti koaksialnih kablov z možnostjo UV-laserskega tiskanja, 50 ohmov, tipa WZ, za uporabo v letalskih električnih sistemih pri delovni temperaturi med –65 °C in 200 °C ter še posebej za visoko frekvenco do 6 GHz. Ta dokument vključuje tudi različico ojačanega kabla (koda R), ki se uporablja za občutljive sisteme z nadzorovanim napetostnim razmerjem stojnega vala (VSWR).

General Information

• Status: Published
• Publication Date: 19-Aug-2025
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 2 - Cables & Stripping Tools
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Aug-2025
• Completion Date: 20-Aug-2025
• Ref Project: SIST EN 4604-003:2025 - Aerospace series - Cable, electrical, for signal transmission – Part 003 : Cable, coaxial, 50 Ohm, 200 °C, type WZ – Product standard

Relations

• Replaces: EN 4604-003:2019 - Aerospace series - Cable, electrical, for signal transmission - Part 003: Cable, coaxial, 50 ohms, 200 °C, type WZ - Product standard
• Effective Date: 31-Mar-2021

Overview

EN 4604-003:2025 is a CEN aerospace product standard that specifies the requirements for UV laser printable coaxial cables, 50 Ω, type WZ, designed for aircraft electrical systems. It covers cable construction, materials, electrical performance and required tests for operation from −65 °C to 200 °C and for high‑frequency use up to 6 GHz. The standard also defines a reinforced version (code R) for sensitive systems that require controlled VSWR.

Key topics and technical requirements

• Materials & construction

  • Conductor: single‑strand copper, 1 µm silver plated (ASTM B298)
  • Dielectric: fluoropolymer; screen: metallized foil; shield: silver‑plated copper braid
  • Jacket: FEP (white); UV laser markable surface
  • Typical overall diameter ~3.4–3.7 mm, mass ~26–30 g/m

• Electrical characteristics

  • Characteristic impedance: 50 ± 2 Ω (standard and reinforced R)
  • Frequency performance: guaranteed up to 6 GHz
  • Attenuation: increases with frequency (values specified up to 141 dB/100 m at 6 GHz)
  • Power handling: frequency‑dependent (e.g., ~1 100 W at 50 MHz down to ~130 W at 6 GHz; values given at 40 °C, sea level)
  • VSWR: defined limits (tight control for reinforced code R)
  • Velocity of propagation: V = (0.828 ± 0.04) × c
  • Transfer impedance: ≤ 30 mΩ/m up to 400 MHz

• Mechanical & environmental

  • Operating temperature range: −65 °C to 200 °C
  • Minimum bend radius: static 37 mm, dynamic 74 mm
  • Tests for cold bend, thermal stability (200 °C), rapid temperature change, flammability, resistance to fluids, and more (per EN 3475 series)

• Verification & marking

  • Comprehensive test regime per EN 3475 parts (visual, dimensions, ohmic resistance ≤ 28 Ω/km, insulation resistance ≥ 1 000 MΩ·km, voltage proof, VSWR/return loss, attenuation, laser markability)
  • Requirements for identification, packaging and delivery length

Applications and who uses this standard

• Typical uses: aircraft RF signal transmission, avionics interconnects, antenna feeds, radar and datalink cabling where high temperature resistance and controlled RF performance are required.
• Primary users:
  • Aerospace OEMs and system integrators
  • Cable manufacturers and suppliers (specifying UV laser printable FEP jackets)
  • Avionics and RF engineers (selecting cables for up to 6 GHz)
  • Procurement, quality assurance and certification teams (ensuring EN 4604‑003:2025 compliance)
  • Installation and harness designers (bending, routing and connectorization guidance)

Related standards

• EN 3475 series (aerospace cable test methods)
• EN 4604‑001 (technical specification) and EN 4604‑002 (general)
• IEC 60096‑0‑1 (RF cable design guidelines)
• TR 6058 (cable code identification)

Use EN 4604-003:2025 as the definitive reference when specifying 50 Ω aerospace coaxial cable type WZ (200 °C) to ensure consistent mechanical, thermal and RF performance across aircraft programs.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2025
Aeronavtika - Kabli, električni, za prenos signala - 003. del: Kabli, koaksialni, 50
ohm, 200 °C, tip WZ - Standard za proizvod
Aerospace series - Cable, electrical, for signal transmission – Part 003 : Cable, coaxial,
50 Ohm, 200 °C, type WZ – Product standard
Luft- und Raumfahrt - Elektrische Leitungen für Signalübertragungen - Teil 003:
Koaxialkabel, 50 Ohm, 200 °C, Typ WZ - Produktnorm
Série aérospatiale - Câbles électriques pour transmission de signaux - Partie 003 : Câble
coaxial, 50 ohms, 200 °C, type WZ - Norme de produit
Ta slovenski standard je istoveten z: EN 4604-003:2025
ICS:
29.060.20 Kabli Cables
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4604-003
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2025
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 4604-003:2019
English Version
Aerospace series - Cable, electrical, for signal transmission
- Part 003: Cable, coaxial, 50 ohms, 200 °C, type WZ -
Product standard
Série aérospatiale - Câbles électriques pour Luft- und Raumfahrt - Elektrische Leitungen für
transmission de signaux - Partie 003 : Câble coaxial, 50 Signalübertragungen - Teil 003: Koaxialkabel, 50 Ohm,
ohms, 200 °C, type WZ - Norme de produit 200 °C, Typ WZ - Produktnorm
This European Standard was approved by CEN on 25 May 2025.

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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4604-003:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 6
4 Required characteristics . 7
4.1 Material, construction, dimensions and mass . 7
4.1.1 Material . 7
4.1.2 Construction, dimensions and mass . 7
4.2 General characteristics . 8
4.3 Electrical characteristics . 8
4.4 Tests . 11
5 Quality assurance . 16
6 Designation . 16
7 Identification and marking . 16
8 Packaging, labelling and delivery length . 17
8.1 Packaging and labelling . 17
8.2 Delivery length. 17
9 Technical specification . 17
Bibliography . 18

European foreword
This document (EN 4604-003:2025) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by February 2026, and conflicting national standards shall be
withdrawn at the latest by February 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 4604-003:2019.
EN 4604-003:2019:
— EN 4604-003 (P3), 09/2019 — Introduction of enhance performance for reinforced cable version
with controlled VSWR performances.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: 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 the
United Kingdom.
1 Scope
This document specifies the required characteristics of UV laser printable coaxial cables, 50 Ω, type WZ,
for use in aircraft electrical systems at operating temperatures between −65 °C and 200 °C and specially
for high frequency up to 6 GHz.
The document encloses also a reinforced cable version (code R) which is used for sensitive systems
with controlled VSWR.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 3197, Aerospace series — Design and installation of aircraft electrical and optical interconnection
systems
EN 3475-100, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100: General
EN 3475-201, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 201: Visual
examination
EN 3475-202, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 202: Mass
EN 3475-203, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 203: Dimensions
EN 3475-301, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 301: Ohmic
resistance per unit length
EN 3475-302, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 302: Voltage
proof test
EN 3475-303, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 303: Insulation
resistance
EN 3475-304, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 304: Surface
resistance
EN 3475-306, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 306: Continuity
of conductors
EN 3475-307, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 307: Corona
extinction voltage
EN 3475-406, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 406: Cold bend
test
EN 3475-407, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 407:
Flammability
EN 3475-411, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 411: Resistance
to fluids
EN 3475-415, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 415: Rapid
change of temperature
EN 3475-416, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 416: Thermal
stability
EN 3475-502, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 502: Notch
propagation
EN 3475-503, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 503: Scrape
abrasion
EN 3475-505, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 505: Tensile test
on conductors and strands
EN 3475-506, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 506: Plating
continuity
EN 3475-507, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 507: Adherence
of plating
EN 3475-508, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 508: Plating
thickness
EN 3475-512, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 512: Flexure
endurance
EN 3475-513, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 513:
Deformation resistance (Installation with plastic cable ties)
EN 3475-515, Aerospace series — Cable, electrical, aircraft use — Test methods — Part 515: Crush
resistance
EN 3475-601, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 601: Smoke
density
EN 3475-602, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 602: Toxicity
EN 3475-701, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 701:
Strippability and adherence of insulation to the conductor
EN 3475-702, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 702: Screen
pushback capability
EN 3475-703, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 703: Permanence
of manufacturer's marking
EN 3475-705, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 705: Contrast
measurement
EN 3475-706, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 706: Laser
markability
EN 3475-804, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 804: Velocity of
propagation
EN 3475-805, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 805:
Characteristic impedance
EN 3475-806, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 806: Attenuation
EN 3475-807, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 807: Transfer
impedance
EN 3475-812, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 812: Return loss
(VSWR)
EN 3838, Aerospace series — Requirements and tests on user-applied markings on aircraft electrical
cables
EN 4604-001, Aerospace series — Cable, electrical, for signal transmission — Part 001: Technical
specification
EN 4604-002, Aerospace series — Cable, electrical, for signal transmission — Part 002 : General
TR 6058, Aerospace series — Cable code identification list
ASTM B298, Standard specification for silver-coated soft or annealed copper wire
IEC 60050 (all parts), International Electrotechnical Vocabulary (IEV)
IEC 60096-0-1, Radio frequency cables — Part 0-1: Guidelines to the design of detail specifications —
Coaxial cables
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 3475-100 and
IEC 60050 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/

Published as ASD-STAN TR, available at: https://www.asd-stan.org/.
Published by American Society for Testing and Materials (ASTM International), available at:
https://www.astm.org/.
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