38999 Series


European standard similar to MIL-DTL-38999 Series III
Part Number :
38999 Series


European standard similar to MIL-DTL-38999 Series III

Key features

  • 100% scoop proof design
  • 9 shell sizes from 09 to 25 
  • More than 60 contacts arrangements, from 1 to 128 contacts
  • Ruggedized product with an high resistance to shocks & vibrations
  • Several materials et platings available, with RoHS & REACH compliant versions


  • Commercial Air 
  • Military Avionics
  • Ground Vehicles
  • Battlefield Communication C5ISR
Technical information

Product benefits

  • Similar to MIL-DTL-38999 series III with additional requirements
  • Higher lightning strikes requirements (up to 15kA)
  • Higher fluid resistance

Materials & Platings

  • Aluminium: Olive Drab Cadmium, Nickel 
  • Composite: Olive drab cadmium, Nickel 
  • Stainless steel : Passivated 

Contacts types & terminations

  • More than 60 contact arrangements
  • Contacts size 23 to 8
  • Signal, power, twinax, quadrax (EN3155 qualified contacts available)
  • Crimp

Environmental Characteristics

  • 500 mating cycles
  • -65degC to +175degC or 200degC depending on material & plating
  • 48 to 500 hours for Metal versions & 2000 hours for composite

Electrical characteristics

  • Shell to shell conductivity from 1 to 10 mO depending on materials & platings
  • Shell to shell bottoming, grounding fingers on the plug shell
  • Insulation resistance @Ambient : 5.103 mO
  • Contacts rating from 5 to 60 Amps
2 documents

Catalog MIL-DTL-38999 & Derivates

Last update : 05/03/2024
Product change notifications (PCN)
1 notifications
#PCN 128344

Production stoppage of ours connectors in EN3645 designation using the layout 15-97

Request form to receive the detailed « Product Change Notification »

J'accepte les conditions générales
38999 reduced flange jam nut receptacle
I/O Connectors
38999 Series

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EN3645 description

The EN3645 connector from Amphenol Socapex is a high-performance solution that is similar to the MIL-DTL-38999 series III connector but offers additional requirements to meet the most demanding applications. It is designed to provide exceptional performance in the harshest environments, including commercial and military aerospace. One of the key features of the EN3645 connector is its higher resistance to fluid. This design helps to protect the connector from exposure to harsh fluids and chemicals, making it an ideal choice for use in aerospace applications. Additionally, the EN3645 connector has higher lightning strikes requirements of up to 15kA, providing enhanced protection against power surges and other electrical disturbances. The EN3645 connector is well-suited for use in a variety of commercial and military aerospace applications. Its rugged design and ability to withstand extreme conditions make it an excellent choice for use in aircraft, spacecraft, and other aerospace vehicles. It is also an excellent option for use in applications where high reliability and performance are critical. Overall, the EN3645 connector from Amphenol Socapex is a high-quality solution that offers exceptional performance, reliability, and durability in even the most challenging environments. Its ability to withstand fluid exposure and lightning strikes, combined with its rugged design, make it an excellent choice for a wide range of aerospace applications.