EN (AIRBUS) Connectors -EN3645, EN3646

EN (AIRBUS) connectors are similar to MIL-DTL-38999 series III and MIL-DTL-26482 Series II connectors with additional requirements, especially in terms of lightning strike performances and resistance to fluids.

EN3645, similar to MIL-DTL-3899 connectors were originally created for the most challenging applications and rugged surround environment. EN3645 connectors are designed for use in a broad range of diverse applications across numerous industries such as aerospace, civil aviation, shipboard applications, and much more.

EN3645 features:

  • Hermetic version available
  • Quick self-lock coupling eliminates the need for lockwire
  • Superior EMI shielding and Electrostatic Discharge Protection (EDP)
  • Excellent resistance to vibration, moisture, shock, and corrosion
  • Temperature range -65°C to 125°C (-85°F to 257°F)
  • Wide variety of insert options and accessories
  • Uses standard MIL-DTL-38999 contacts, assembly tools, and insert arrangements
  • Recessed pins provide added contact protection

EN3646 is an AIRBUS specification for a low profile, lightweight version of the MIL-DTL-26482 Series II connector. Is it a bayonet style, quick release connector that was designed for commercial aerospace applications. 

EN3646 features:

  • Bayonet Style and quick release
  • Hermetic version available
  • Souriau 8525 and 8526 are the commercial versions
  • Shell type: jam nut receptacle, plug, and square flange
  • Shell plating: black anodized, nickel, olive drab, cadmium
  • Contacts (EN3155) material: copper alloy with gold plating
  • Contact (EN3155) options : PC Tail, crimp, solder and quadrax.

EN2997 is a stainless-steel screw coupling connector designed for use in aviation harsh environments. Perfect for engines and landing gear. Air Electro offers Souriau’s 8535 and 8536 series version. EN2997 matches MIL-83723 Series III requirements.

EN2997 features:

  • Temperature range: - 60°C +260°C
  • Leakage as per 2591-312: Method B differential pressure: 100kPa Maximum leakage flow: 16x10-6 m3 /h
  • Salt Spray: 500 hours.
  • Resistance to fluids: MIL-H 5606 - SKYDROL 500 B4 - LD4 - JP5 - MIL-L 7870A - MIL-L 23699 - MIL- L 7808 - MIL-C 25769 - MIL-A 8243
  • Contact resistance: initial contact resistance at ambient temperature as per EN 2997 and EN315
  • Shielding: to 100 MHz at 1 GHz attenuation 65 dB.
  • Shell: Passivated stainless steel
  • Grommet and seal: Silicone elastomer
  • Insulator: Thermoplastic
  • Contact body: Copper Alloy
  • Mating cycles: 500 coupling operation

Air Electro is an Authorized value-added distributor for EN3645, EN3646 and EN2997 connectors through Souriau’s connector lines. We stock a large component inventory allowing us the build EN connectors based on your needs within 48 hours and have them ready at your doorstep.

Please contact your Air Electro technical specialist with all of your EN (AIRBUS) connector needs.