Souriau > Mil-DTL-38999 > series 1 (8LT)
milc-38999-ser1-8lt

MIL-C-38999 series 1 (8LT)

Description

High density connectors for all military and aeronautical purposes.

Specifications

  • High density connector from 1 to 128 contacts
  • Sizes 22D, 20, 16, 12, # 16 coax and # 8 triax
  • Bayonet locking system
  • 100% scoop proof
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Standards

MIL-C 38999 Series I - QPL approved
NFC 93422 HE 308
DTAT-C 5935 X 0005 (HE 308 standard)
GAM/T1 list

Mechanical Characteristics

  • Shell : aluminium alloy
  • Plating :
    • olive green cadmium (B)
    • nickel (F)
  • Insulator : thermoplastic
  • Grommet and seal : silicone elastomer
  • Contact : copper alloy Plating : gold over nickel
  • Endurance : 500 cycles Shock : 300 g during 3 ms and MIL-S901 grade A
  • Vibration : sine 10 to 2000 H 30 g random 100 to 300 Hz - 5 (g2/Hz)
  • Contact retention : (mini force in N)
    • size 22 D : 45 N
    • size 20 : 67 N
    • size 16 : 110 N
    • size 12 : 110 N
    • size 8 : 110 N

Electrical Characteristics

Test voltage (Vrms)

Service Sea Level At 21000 m
M 1300 800
I 1800 1000
II 2300 1000
  • Contact resistance :
    resistance of wire included in measurement :
    • size 22D : 14.6 mO
    • size 20 : 7.3 mO
    • size 16 : 3.8 mO
    • size 12 : 1.7 mO
  • Insulation resistance : = 5000 MO (at 500 Vdc)
  • Contact rating :
    • size 22D : 5 A size 20 : 7.5 A
    • size 16 : 13 A size 12 : 23 A
  • Shell continuity :
    • olive green plating : 2.5 mO
    • nickel plating : 1 mO
  • Shielding : - 90 dB to 100 MHz
    • 50 dB to 10000 MHz
  • Triaxial contact : # 8
    • bandwidth : 0 - 20 MHz
    • voltage rating : 500 Vac Max.
  • 125 Vac at 21000 m
    • voltage drop :
      inner and middle contact = 55 mV under 1A
      outer contact = 75 mV under 12A

Climatic Characteristics

  • Temperature range :
    • cadmium plating (B) : -65°C +175°C
    • nickel plating (F) : -65°C +200°C
  • Sealing : mated connectors
    • differential pressure 2 bars
    • leakage = 16 cm3/hr
  • Salt spray to :
    MIL STD 1344 method 1001
    • 500 hours (version B)
    • 48 hours (version F)
  • NFC 93422
    • 48 hours (version F)
  • Damp heat :
    MIL-C 38999 : 10 cycles 24 hrs
    NFC 93422 : 56 days

Resistance to fluids

To MIL-C 38999 :

  • MIL-L 7808
  • MIL-L 23699
  • MIL-H 5606
  • MIL-A 8243
  • MIL-C 25769
  • MIL-T 5624 (JP5)
  • hydraulic fluids
  • solvents
    To NFC 93422 :
    F46 - F54 - 0/180 - H515 - H542 - XH45
 
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