MIL-DTL-55302/131D
REQUIREMENTS
Design and construction:
Dimensions and configurations: See figure 1.
Plating:
Contact plating: The plating in the engagement area for .170 inch minimum length from the tip of the
contact shall be gold in accordance with ASTM B488, type II, code C or D, class 1.27, over nickel
plating in accordance with SAE-AMS2423, 30 to 150 microinches. The plating on the contact
termination end for .170 inch minimum length from the end of the contact shall be tin lead in
accordance with MIL-DTL-55302.
Nonfunctional areas: Any portion of the contact other than the contact mating area or termination
area can be plated in accordance with MIL-DTL-55302.
Contact identification: See figure 1.
Contact separation forces:
Mating and unmating: The maximum mating force, in pounds, shall not exceed a value equal to .25
times the number of contacts, and the withdrawal force, in pounds, shall be a minimum of .025 times
the number of contacts and shall exceed the measured insertion force, when the housing is loaded
with contacts and mating with connector in accordance with MIL-DTL-55302/134.
Contact rating: 3 amperes maximum per contact.
Contact resistance: No individual contact pair shall have a resistance exceeding .020 ohm.
Contact retention: 3 pounds minimum per contact.
Dielectric withstanding voltage:
Sea level: 1,000 volts rms, 50 or 60 hertz.
High altitude: 300 volts rms, 50 or 60 hertz.
Oversize pin exclusion: Not applicable.
PIN: See figure 1.
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