MIL-DTL-28804 Connectors, Plug And Receptacle, Electric, Rectangular, High Density, Polarization Center Jackscrew, General Specification ForThis detail specification covers the general requirements for rectangular electrical connectors, with size 22, nonremovable, solder type contacts, and rear removable crimp type contacts, environment resistant and non-environment, intended for use in electronic and electrical equipment \(see 6.1 for restrictions on intended use and application\).

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MIL-DTL-28804D

4.7.5 Mating and unmating force (see 3.6.4). Mating and unmating forces shall be measured in accordance with method 2013

of MIL-STD-1344, the following details shall apply:

a. Special mounting means: Normal mounting.

b. Wire (see 4.5.1.1).

c. Applicable hardware: Complete connector assembly.

d. Force or torque requirements (see 3.6.4).

e. Rate of mating and unmating: Maximum of 10 seconds per operation.

f. Mating parameters: When coupling pins lock.

4.7.6 Contact retention (see 3.6.5). Contact retention shall be measured in accordance with method 2007 of MIL-STD-1344.

a. Number of samples (see 4.2.1).

b. Removal of wires: Not applicable.

c. Applied axial force: 10 pounds (4.53 Kg) minimum.

d. Maximum displacement: .012 inch (0.30 mm).

e. Axial direction: Force applied to mating end of contacts.

4.7.7 Dielectric withstanding voltage (see 3.6.6).

4.7.7.1 Sea level. Unmated connectors shall be tested in accordance with method 3001 of MIL-STD-1344. The applicable test

voltage in table XV shall be applied between all adjacent contacts and between the center hardware and each adjacent contact.

For group A inspection, voltage may be applied for a minimum of 10 seconds.

TABLE XV. Test voltage (rms 60 Hz ac volts). 1/

Altitude

Moisture conditioned

All other samples

feet (km)

(see 4.7.12) samples

Sea level

500

1200

70,000 (21.34)

375

1/ These are not working voltages.

4.7.7.2 Altitude (see 3.6.22). Unmated connectors shall be tested as specified in 4.7.7.1, with altitude pressure of 35.5 torr, at

the simulated altitude of 70,000 feet (21,336 meters). Voltage shall be applied for 5 seconds. All other requirements are stated in

4.7.7.1.

4.7.8 Insulation resistance (see 3.6.7). Connectors shall be tested in accordance with method 3003 of MIL-STD-1344. The

points for resistance measurements shall be:

a. Between 50 percent of adjacent contacts, but not less than four pairs.

b. Between 50 percent of adjacent contacts and the center hardware, but not less than four pairs.

c. The contacts selected shall be those having the closest spacing between measuring points.

4.7.9 Contact resistance (see 3.6.8). Contact resistance shall be measured in accordance with method 3004 of MIL-STD-1344,

on each mated pair.