Aerospace series - Connectors, coaxial, radio frequency - Part 212: Type 2, TNC interface - Clamp nut assembly version - Square flange receptacle - Product standard

This European Standard specifies the characteristics of screwed on coupling (TNC interface) coaxial square flange receptacle − 50 ohms. The cable to connector assembly is a clamp technology.

Luft- und Raumfahrt - Koaxiale Hochfrequenz-Steckverbinder Teil 212: Typ 2, TNC-Schnittstelle - Klemmverbindung - fester Steckverbinder mit quadratischem Montageflansch - Produktnorm

Série aérospatiale - Connecteurs coaxiaux pour radio fréquences - Partie 212: Type 2, interface TNC - Version à presse étoupe - Embase à collerette carrée - Norme de produit

Aeronavtika - Konektorji, koaksialni, radiofrekvenčni - 212. del: Tip 2, vmesnik TNC - Izvedba z objemno matico - Vtičnica s prvokotno prirobnico - Standard za proizvod

Ta evropski standard določa lastnosti koaksialnih vtičnic s prvokotno prirobnico in vijačnim spojem (vmesnik TNC) – 50 ohmov. Sklop kabla in konektorja je spojna tehnologija.

General Information

Status
Published
Publication Date
08-Sep-2015
Withdrawal Date
30-Mar-2016
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 2 - Electrical
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
09-Sep-2015
Completion Date
09-Sep-2015

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
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 4652-212:2015 is a European standard developed by CEN that specifies the requirements for aerospace-grade coaxial connectors with a TNC (Threaded Neill–Concelman) interface. This standard addresses the clamp nut assembly version of the Type 2 TNC interface, specifically focusing on the square flange receptacle design with 50 ohms impedance. Intended for high-frequency radio frequency (RF) applications in aerospace systems, this product standard ensures consistent performance, quality, and reliability under demanding environmental and operational conditions.

The use of clamp technology in the cable-to-connector assembly enhances mechanical robustness and electrical integrity, making this standard critical for aerospace applications requiring precision RF connectivity.

Key Topics

  • Connector Type and Interface
    The standard covers Type 2 TNC coaxial connectors featuring a clamp nut assembly and square flange receptacle design, optimized for 50-ohm systems common in aerospace RF applications.

  • Mechanical and Dimensional Specifications
    Detailed requirements for physical dimensions, mass, and panel thickness are included to guarantee interchangeability and secure mounting. The flange's square shape ensures reliable panel attachment.

  • Materials and Finishes
    High-quality materials such as copper alloy with nickel plating for the body, gold-plated copper alloy for the center contact, and PTFE insulators ensure electrical performance and resistance to corrosion under aerospace conditions.

  • Electrical Characteristics
    The connectors support up to 6 GHz operating frequency, with maximum VSWR of 1.15 and insertion loss capped at 0.04√f dB. Contact resistance and insulation resistance requirements ensure minimal signal loss and excellent dielectric properties in aerospace RF communication.

  • Environmental and Durability Testing
    The standard mandates rigorous testing per EN 2591 series, including water ingress resistance, salt mist exposure, vibration, shock, temperature cycling between −65 °C and +165 °C, and low pressure tests. These tests validate the connector’s performance in extreme aerospace environments.

  • Cable Retention and Assembly
    Clamp technology for cable attachment provides high retention force (minimum 180 N), ensuring mechanical stability during service life lasting at least 500 mating cycles.

  • Marking, Packaging, and Storage
    Marking requirements ensure traceability, while packaging and storage instructions protect connectors from damage during handling and transportation.

Applications

EN 4652-212:2015 coaxial connectors are designed primarily for aerospace RF systems where reliable, high-frequency signal transmission is critical. Typical applications include:

  • Avionics communication systems
  • Radar and navigation equipment
  • Radio frequency modules in satellites and spacecraft
  • Military aerospace communication devices requiring stringent environmental resistance
  • High-reliability data transmission in flight control and instrumentation systems

The robust construction and stringent testing protocols make these connectors suitable for harsh aerospace environments involving vibration, temperature extremes, moisture, and salt exposure.

Related Standards

  • EN 4652-001: Technical specifications for aerospace series RF connectors, providing baseline terms, definitions, and performance criteria related to the family of coaxial connectors.

  • EN 4652-210: Specifies the Type 2 TNC interface clamp nut assembly straight plug version complementing the square flange receptacle covered in EN 4652-212.

  • EN 2591: Aerospace series test methods for electrical and optical connectors used to validate connector performance under environmental and mechanical stress.

  • EN 2812: Procedures for stripping electric cables to prepare for assembly with connectors conforming to EN 4652.

  • EN 9133: Quality management systems for the qualification of aerospace standard parts, ensuring consistent manufacturing quality and compliance.

Practical Value

Complying with EN 4652-212:2015 enables aerospace manufacturers and suppliers to deliver high-quality coaxial connectors that meet rigorous industry demands for RF performance and environmental robustness. The standard's emphasis on tested mechanical retention, electrical characteristics, and resistance to harsh conditions provides assurance of long-term reliability in critical aerospace communication systems.

By adopting these connectors, aerospace system integrators can reduce risk, improve signal integrity, and ensure compatibility across complex RF networks within aerospace platforms. This standard supports innovation in aerospace connectivity technologies while maintaining proven interfaces for safety and performance compliance.

Get Certified

Connect with accredited certification bodies for this standard

DEKRA North America

DEKRA certification services in North America.

ANAB United States Verified

Eagle Registrations Inc.

American certification body for aerospace and defense.

ANAB United States Verified

Element Materials Technology

Materials testing and product certification.

UKAS United Kingdom Verified

Sponsored listings

Frequently Asked Questions

EN 4652-212:2015 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Connectors, coaxial, radio frequency - Part 212: Type 2, TNC interface - Clamp nut assembly version - Square flange receptacle - Product standard". This standard covers: This European Standard specifies the characteristics of screwed on coupling (TNC interface) coaxial square flange receptacle − 50 ohms. The cable to connector assembly is a clamp technology.

This European Standard specifies the characteristics of screwed on coupling (TNC interface) coaxial square flange receptacle − 50 ohms. The cable to connector assembly is a clamp technology.

EN 4652-212:2015 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.

EN 4652-212:2015 has the following relationships with other standards: It is inter standard links to EN 2591-317:1998, EN 2591-212:2005, EN 2591-102:1996, EN 2591-214:2012, EN 2812:2019, EN 2591-206:1996, EN 2591-508:2023, EN 2591-409:1999, EN 2591-223:2007, EN 2591-303:1997, EN 2591-513:2002, EN 2591-311:1997, EN 2591-406:1998, EN 2591-222:2007, EN 2591-221:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 4652-212:2015 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)


SLOVENSKI STANDARD
01-november-2015
$HURQDYWLND.RQHNWRUMLNRDNVLDOQLUDGLRIUHNYHQþQLGHO7LSYPHVQLN
71&,]YHGED]REMHPQRPDWLFR9WLþQLFDVSUYRNRWQRSULUREQLFR6WDQGDUG]D
SURL]YRG
Aerospace series - Connectors, coaxial, radio frequency - Part 212: Type 2, TNC
interface - Clamp nut assembly version - Square flange receptacle - Product standard
Luft- und Raumfahrt - Hochfrequenz Steckverbinder, koaxial - Teil 212: Typ 2, TNC -
Klemmverbindung - Kabelkuppler mit 4kt-Flansch - Produktnorm
Série aérospatiale - Connecteurs coaxiaux pour radio fréquences - Partie 212: Type 2,
interface TNC - Version à presse étoupe - Embase à collerette carrée - Norme de produit
Ta slovenski standard je istoveten z: EN 4652-212:2015
ICS:
31.220.10 9WLþLLQYWLþQLFHNRQHNWRUML Plug-and-socket devices.
Connectors
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4652-212
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 49.060
English Version
Aerospace series - Connectors, coaxial, radio frequency -
Part 212: Type 2, TNC interface - Clamp nut assembly
version - Square flange receptacle - Product standard
Série aérospatiale - Connecteurs coaxiaux pour radio Luft- und Raumfahrt - Koaxiale Hochfrequenz-
fréquences - Partie 212: Type 2, interface TNC - Steckverbinder Teil 212: Typ 2, TNC-Schnittstelle -
Version à presse étoupe - Embase à collerette carrée - Anschluss mit Konusringverschraubung - Fester
Norme de produit Steckverbinder mit quadratischem Montageflansch -
Produktnorm
This European Standard was approved by CEN on 7 February 2015.

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 Ref. No. EN 4652-212:2015 E
worldwide for CEN national Members.

Contents Page
European Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
5 Test methods . 8
6 Qualification . 10
7 Quality assurance . 11
8 Designation . 11
9 Marking . 11
10 Packaging . 11
11 Storage . 11

European Foreword
This document (EN 4652-212:2015) 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 March 2016, and conflicting national standards shall
be withdrawn at the latest by March 2016.
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.
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,
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 the United Kingdom.
1 Scope
This European Standard specifies the characteristics of screwed on coupling (TNC interface) coaxial
square flange receptacle − 50 ohms. The cable to connector assembly is a clamp technology.
2 Normative 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.
1)
EN 2591 , Aerospace series — Elements of electrical and optical connection — Test methods
EN 2812, Aerospace series — Stripping of electric cables
EN 4652-001, Aerospace series — Connectors, coaxial, radio frequency — Part 001: Technical specification
EN 4652-210, Aerospace series — Connectors, coaxial, radio frequency — Part 210: Type 2, TNC interface
2)
— Clamp nut assembly version — Straight plug — Product standard
EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace
standard parts
3)
TR 6058, Aerospace series — Cable code identification list
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 4652-001 apply.
4 Required characteristics
 The connection technology shall comply to required tests described in Clause 5.
 Interface shall comply to EN 4652-001.
 Water ingress resistance is required in mated conditions for all cable groups.
 Water ingress resistance is required in unmated condition for cable group A.

1) All parts quoted in this European Standard.
2) Publis
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...