MIL-DTL-13623E
3.2.12 Terminals. Tip dimensions of round terminals for snap-on connectors shall conform to
3.3 Performance. The switch shall perform as specified herein when energized at a rated load of
28 V dc.
3.3.1 Voltage drop. When connected as in use and energized, the voltage drop between terminals
3.3.2 Overload. The switch shall perform as specified in 3.3.1 after cycling while connected to loads
40 percent greater than rated loads (see 4.7.2).
3.3.3 Endurance. After 50,000 cycles of operation at rated loads, the voltage drop shall be no
greater than 500 millivolts. The torque required to operate the switch shall be no less than 30 ounce-
3.3.4 Dielectric strength. The switch shall perform as specified in 3.3.1 and shall evidence no
burning, charring, loosening, arcing or other damage to the insulation after operating in each "on" and
"off" position with 1000 V root mean square (raw) applied (see 4.7.4).
3.3.5 Torque. The switch shall operate with a torque of not less than 30 ounce-inches nor more than
70 ounce-inches. The switch shall perform as specified herein and evidence no damage after operation
with a 3 foot-pound torque (see 4.7.5).
3.3.6 Terminal strength. Terminals of the switch shall perform as specified in 3.3.1 and 3.3.4 after
withstanding perpendicular forces and a longitudinal pull of 25 pounds each (see 4.7.6).
3.3.7 Shock resistance. The switch shall perform as specified in 3.3.1 after exposure to shock. The
switch shall evidence no mechanical or electrical malfunction (opening or closing of circuit) during and
after exposure to 3 sawtooth shock pulses, each of 50 gravities (g) peak amplitude for 7 milliseconds (ins)
duration, in each of three orthogonal axes for a total of 18 shock pulses (see 4.7.7).
3.3.8 Vibration resistance. The switch shall perform as specified in 3.3.1 and 3.3.5 after exposure to
vibration for one hour in each of three orthogonal axes for a total of three hours. The vibration shall be an
harmonic motion having an amplitude of .03 inch (.06-inch total excursion) in a frequency sweep from 10
to 55 and return to 10 Hertz (Hz) in 1 minute (see 4.7.8).
3.4 Environmental conditions. The switch shall meet the performance specified in 3.3.1 after
exposure to the range of environmental conditions expected for military usage (see 4.8).
3.4.1 Salt spray resistance. The switch shall perform in accordance with 3.3.1 during and after
exposure to a fog of atomized salt water of 5 percent salt solution for 200 hours (see 4.8.1).
3.4.2 Sand and dust resistance. The switch shall perform as specified in 3.3.1 after exposure to
sand and dust in an air velocity of 2500 + 500 feet per minute (see 4.8.2).
3.4.3 Fungus resistance. The switch shall perform as specified in 3.3.1 after exposure to fungus
growth for 90 days (see 4.8.3).
3.4.4 Waterproofness. The switch shall be mechanically and electrically operable during and after
submersion in saline solution. During submersion, switches shall not leak (see 4.8.4).
after exposure to extreme temperatures (see 4.8.5).
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