38999 Series

RNJ - HE308 - Rack & Panel

Rack & Panel Blind Mate connector for harsh environments
Part Number :
38999 Series

RNJ - HE308 - Rack & Panel

Rack & Panel Blind Mate connector for harsh environments

Key features

  • Rack and panel range derived from HE308 / 38999 series I
  • 8 shell sizes from 11 to 25
  • Realignment capabilities & floatability on 3 axis
  • Quick and easy connection, 100% scoop proof design
  • Several materials et platings available, with RoHS & REACH compliant versions


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

Product benefits :

  • Several receptacles and plugs style : Square flange, Jam nut... 
  • Connection between a rack and a panel without manually coupling/uncoupling the connectors
  • Uses sames contacts and inserts than 38999 series I & III
  • Many versions available : Stand-off (double flange), reduced flange...
  • Compatible with many M85049 backshells for 38999 series I connectors

Materials & Platings :

  • Aluminum : Olive drab Cadmium, Black Zinc Nickel, Nickel, plated
  • Stainless Steel : Passivated
  • ROHS

Contacts types & terminations :

  • More than 80 contacts arrangements
  • Contacts size 23 HD to 4/0
  • Signal, Power, High-speed versions (Coax, Twinax, Quadrax, Octomax...), and optical termini
  • Crimp & PC-Tails (gold & tinned versions)

Environmental Characteristics :

  • 500 mating cycles
  • 65degC to +175degC
  • From 48 to 500 hours depending on material & plating
  • IPX7 when mated and fully cabled

Electrical characteristics :

  • Insulation resistance @Ambient : 105 Mohms
  • Contact rating from 3 to 500 Amps
2 documents

Catalog MIL-DTL-38999 & Derivates

Last update : 05/03/2024

Catalog RNJ

Last update : 16/01/2024
38999 reduced flange jam nut receptacle
I/O Connectors
38999 Series

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RNJ - HE308 - Rack & Panel description

The Amphenol Socapex RNJ HE308 Rack & Panel connector is designed for use in harsh environments where reliable and robust connectivity is essential. These connectors are lightweight and derived from the HE308/38999 series I, making them an ideal choice for applications where space and weight are at a premium. They are 100% scoop-proof, preventing bent pins and short circuits during mating, and offer realignment capability on three axes for blind mate applications. The RNJ HE308 connectors offer excellent EMI shielding, with shells that are grounded before contact mating. They also provide high moisture resistance, thanks to the interfacial seal, main joint souffler, and rear gasket on the plug that are designed to seal out moisture between connector halves. The connectors are also highly corrosion-resistant, with options for olive drab cadmium over nickel plating on aluminum shells that can withstand 500 hours of salt spray exposure or electroless nickel. A free cadmium version is also available. The RNJ HE308 connectors are available in eight shell sizes from 11 to 25 and can accommodate between 1 and 128 contacts in accordance with Mil-C-39029 standards. They are suitable for use with crimp contacts sizes 22D, 20, 16, 12, 8, 4, and 00, PCB contacts sizes 22D and 20, and wire-wrap contacts sizes 22D and 20. They also accept optical termini (POM series) in accordance with Mil-T-29504 standards. These connectors are an excellent choice for use in battlefield communication, ground vehicles, military avionics, and advanced industrial applications.