Board level products for harsh environments


Rectangular 38999


Amphenol’s rectangular connector soars to meet higher expectations.
Blind mate
Uses same contacts as standrad 38999.

Key features

The R39 provides high performance in the severe environment demands of military specifications. Its lower profile translates into a smaller space-saving footprint and the new rectangular orientation provides additional installation options. It is also available in a high density, 127 pin contact version providing a wider range of engineering applications. It delivers the same reliable, familiar benefits found in our 38999 connector: effortless installation; blind push pull mating; extreme durability; quick mate and; “scoop-proof” recessed pin design. Using the same wide range of contacts, and the crimp and insert /removal tooling as 38999, it delivers just a little more.

  • Rectangular space savings
  • Low profile
  • High density 127 position inserts or mixed inserts with power, RF or fibre-optic available

Performance characteristics

  • Dielectric Withstanding Voltage, Sea level:1500 Vac
  • Dielectric Withsrtanding Voltage, 70 000 ft:500 VDC
  • Insulation Resistance: 5 G min at 500 Vdc
  • Durability: 500 cycles
  • Moisture Resistance: MIL-STD-202, METHOD 106 (OMIT 7a AND 7b)
  • Thermal shock: MIL-STD-202, METHOD 107, COND. A
  • Shock: MIL-STD-202, METHOD 213, COND. A
  • Vibration: MIL-STD-202, METHOD 204, COND. B


  • Per M39029/57 & M39029/58 for signal and power
  • Per M39029/102 & 103 for coax
  • Fiber-optic contacts available
  • Terminations: crimp, PCB, Compliant


  • Shell: Aluminium Alloy
  • Inserts: Thermoplastic per MIL-P-46185
  • Hardware: CRES
  • Contact retention: BeCu
  • Available shell finishes: Electroless Nickel, OD chromate over Cadmium, Zinc Nickel, Tin, Gold