MIL-C-18312/4C
Case material: Magnetic or nonmagnetic.
Capacitance value: See table I.
Capacitance tolerance: See table I.
DC rated voltage: See table I.
Circuit diagram:
Seal: Method 112 of MIL-STD-202, condition A.
Liquid-filled capacitors: One hour at 125° ±3°C with no evidence of leakage.
Dielectric withstanding voltage: Method 301 of MIL-STD-202.
Terminal to terminal: 200 percent of rated dc voltage or 2,000 volts whichever is lower.
Capacitance: Method 305 of MIL-STD-202 (for value and tolerance see table I).
Dissipation factor:
At ±25°C: 1.0 percent.
At ±125°C: 2.0 percent.
Insulation resistance:
Terminal to terminal: See table III.
Terminal to case (case not a terminal): 10,000 megohms.
Barometric pressure: Method 105 of MIL-STD-202, test condition B(3.44 inches of mercury (50,000 ft)).
Vibration, low frequency: Method 201 of MIL-STD-202.
Thermal shock: Method 107 of MIL-STD-202, condition A, except the high temperature shall be +125°C.
Immersion: Method 104 of MIL-STD-202, condition C.
Insulation resistance:
Terminal to terminal: Not less than 1/3 the value specified in table III.
Terminal to case (case not a terminal): 5,000 megohms, minimum.
Dielectric withstanding voltage:
Terminal to terminal: 150 percent rated dc voltage.
Terminal to case (case not a terminal): 400 percent of rated dc voltage or 2,000 volts whichever is lower.
Capacitance change: Not to exceed 10 percent of initial value.
Dissipation factor: Not to exceed 110 percent of initial requirement.
Terminal strength: Method 211 of MIL-STD-202, conditions A and E.
Condition A: Applied force 2 pounds.
Condition E: Torque 2 pound-inches.
Low temperature and capacitance change with temperature.
Conditions: 48 hours with rated voltage applied.
Capacitance change: See table III.
Life:
Conformance: 250 hours at conditions specified for 1,000-hour test.
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