MIL-DTL-55302/27K
REQUIREMENTS:
Design and construction:
Dimensions and configuration: See figure 1.
Material:
Insulator body: Insulator material shall be in accordance with MIL-DTL-55302 or type GLCP-30F in
accordance with ASTM D5138 or MIL-M-24519.
Contact material: Contact material in accordance with MIL-DTL-55302 or beryllium copper alloy C17400 in
accordance with ASTM B768.
Gasket: Silicon rubber.
Plating:
Engagement area: Gold in accordance with MIL-DTL-55302 for .100 inch (2.54 mm) length, over nickel all
over in accordance with MIL-DTL-55302.
Termination area: Tin lead over nickel in accordance with MIL-DTL-55302 for the lengths:
.165 inch (4.19 mm) minimum length for type I, .200 inch (5.08 mm) minimum length for type II.
.300 inch (7.62 mm) minimum length for type III, .140 inch (3.56 mm) minimum length for type IV.
Termination for type V and VI contacts:
Gold over nickel in accordance with MIL-DTL-55302 for the entire termination length.
Contact identification: See figure 1.
Contact rating: 3.0 amperes maximum per contact, 2.25 amperes continuous per contact at 75°F.
Keying: See MIL-DTL-55302/31.
Oversized pin exclusions (sockets only): .0465 diameter pin.
Contact separation force: The connector shall meet the requirements as specified in MIL-DTL-55302/29.
Wire size: Number 26 AWG maximum with type II, solder eyelet contact for wire termination. Number 30 AWG
may be used with type V and VI wrappost contacts.
Resistance to test probe damage: The connector shall meet the requirements as specified in MIL-DTL-
55302/30.
Mating and unmating: The maximum mating force in pounds shall be the number of contacts multiplied by .25
and the withdrawal force in pounds shall be a minimum of .025 times the number of contacts and shall not
exceed the measured insertion force.
Contact resistance: No individual contact pair shall have a resistance exceeding .020 ohm.
Contact retention: 3 pounds minimum for the type I, II, III, IV and VI contacts, and .5 pound minimum for the type
V contact.
Dielectric withstanding voltage:
Sea level: 900 volts rms.
High altitude: 200 volts rms.
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