MIL-DTL-38999 Series I, II, III Connectors
Performance and Material Specifications
MATERIALS AND FINISHES
Aluminum
Grounded Plug
Composite
Grounded Plug
Receptacle
Receptacle
Shell
Aluminum alloy
Aluminum alloy*
Thermoplastic
High grade plastic
Thermoplastic
Insulator
Contacts
High grade plastic
High grade plastic
High grade plastic
Copper alloy, gold plate Copper alloy, gold plate Copper alloy, gold plate Copper alloy, gold plate
Grommet and Seal Silicone base elastomer Silicone base elastomer Silicone base elastomer Silicone base elastomer
Jam Nut
Aluminum alloy
-
-
-
-
-
Grounding Spring
Beryllium copper
Beryllium copper
*Finish as noted in How To Order sections.
ELECTRICAL DATA
Contact Size: 22D, 22M*, 22*, 20, 16 and 12
Contact Rating and Wire Size Accomodation
Contact Size and Test Amps
Wire
22D
22M*
22*
20
16
12
Size
28
26
24
22
20
18
16
14
12
1.5
2.0
3.0
5.0
-
1.5
-
2.0
3.0
5.0
-
-
-
-
-
2.0
-
-
3.0
3.0
5.0
7.5
-
-
-
-
-
-
-
-
-
-
-
7.5
10.0
13.0
-
-
-
-
-
-
-
-
-
-
-
-
17.0
23.0
-
-
-
-
*For reference only
Service Rating
Service Rating N
Service Rating I
Service Rating II
Service Rating M
Mated
Unmated
Mated
Unmated
Mated
Unmated
Altitude
Mated
Unmated
1000
600
600
600
1000
400
260
200
1800
1000
1000
1000
1800
600
400
200
2300
1000
1000
1000
2300
800
500
200
Sea Level
50,000 ft.
70,000 ft.
100,000 ft.
1300
800
800
800
1300
550
350
200
Test voltage, AC (rms), work voltage to be determined by application
Test Data
Test Description
Durability
Parameters
500 cycles of mating and unmating, 250 cycles for Series II with spring fingers
Class F, N; - 65ºC (-85ºF) to + 200ºC (+392ºF) Class A; - 65ºC (-85ºF) to + 150ºC (+302ºF)
Class B,W: - 65ºC (-85ºF) to + 175ºC (+347ºF)
Temperature Range
Mated connectors are vibrated with weights to simulate rear accessory loads to
the following levels:
Vibration
Sine Vibration:
Up to 60 G's - Series I & III (at rated temperature - Series III)
Not applicable for Series II.
43.7 Grms at rated temperature - Series III
49.5 Grms at Ambient Temperature - Series I & III
43.7 Grms at Ambient Temperature - Series II
Random Vibration:
Class F: EMI leakage attenuation, greater than 90dB at 100Mhz, greater than 65dB
at 10 GHz. Shell to shell conductivity, 1.0 millivolt max. resistance.
Class W: EMI leakage attenuation, greater than 90dB at 100 MHz, greater than 50dB
at 10 GHz. Shell to shell conductivity, 2.5 millivolt max.
EMI Shielding
Effectiveness
Class B, W, and Z will withstand 500 hours salt spray.
Class A, F, N, will withstand 48 hours salt spray.
Corrosion Resistant
Connectors are fluid resistant to many fuels, solvents, coolants and oils.
Fluid Immersion
High Impact Shock
Mated conectors terminated with MIL-C-915 cable and environmentally sealed
backshells will withstand high impact shock per MIL-S-901. Applicable to Series
I & III only.
Designed to operate between sea level and 100,000 ft. above sea level.
Altitude
Mated connectors shall withstand sand and dust per method 110 of MIL-STD-202 and
be ice resistant. Applicable to Series I & III only.
Other Environments
NOTE: For hermetic standard or test data please consult ITT.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
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