MIL-PRF-22885/110C
REQUIREMENTS:
Dimensions and configurations: See figures 1 and 2.
Complete switch shall consists of:
1 Pushbutton: Includes front lens, color filters, lens retainer and lamp box. Integral seal and EMI/RFI
shielding shall be provided when required.
1 Switch body: Includes 4 pole switch mechanisms, connector block, and mounting means.
4 Lamps: T-1 subminiature flange base, not included. Order separately or specify on contract or purchase
order.
Material:
Housing, mounting sleeve and panel spacer: Aluminum alloy with black anodize or chemical film
finish. Parts designed to be exposed at the front of the panel after assembly shall have a black
lusterless finish.
Enclosure design: 1 (unsealed) or 2 (dripproof).
Temperature characteristic: 1 (-55°C to -85°C). During tests requiring lamps to be energized, the high
temperature characteristic is 71°C +3°C, -0°C .
Vibration grade: 3 (10 - 2,000 Hz).
Shock: 75 g's, half-sine (MIL-STD-202, method 213, test condition B).
Operation: A (momentary action), E (position indicating alternate action).
Display type: Sunlight readable (S)
Weight: 1.06 ounces (30 grams) maximum.
Operating characteristics:
Actuation force: 5 pounds (22.2 N) maximum.
Total pushbutton travel: .130 to .140 inch (3.3 to 3.6 mm)
Pushbutton extraction force: 2 to 4 pounds (8.9 to 17.8 N).
Coincidence of operating and releasing points: 2 milliseconds maximum (including contact bounce).
Electrical endurance:
Resistive load - 28 V dc: 8 amperes (sea level), 4.5 amperes (50,000 ft).
Inductive load - 28 V dc: 4 amperes (sea level), 2.5 amperes (50,000 ft).
Lamp load - 28 V dc: 1 ampere (sea level and 50,000 feet)
Low level life: 100,000 cycles.
Logic level circuit: 50,000 cycles.
Dielectric withstanding voltage at reduced barometric pressure: MIL-STD-202, method 105, test
condition B (50,000 feet).
Mechanical endurance: 100,000 cycles.
EMI/RFI shielding: Applicable to EMI/RFI shielded switches.
4
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