MIL-PRF-19978/3H
REQUIREMENTS:
Qualification inspection for characteristic K is not required. To furnish parts to characteristic K, perform groups A
and B inspections. A copy of the test data shall be forwarded to the qualifying activity.
Design and construction:
Dimensions and configuration - See figure 1 and table II.
Construction - Extended foil or laid-in-tab.
Terminals - See figure I.
Rated voltage - See table II.
-65°C to +85°C (E)
Rated temperature:
-65°C to +125°C (K)
-55°C to +85°C (F and G)
Capacitance (cap.) (nom) - See table II.
Capacitance tolerance - ±10 percent.
Vibration grade - See table II.
Dissipation factor (DF) (max) - 1.0 percent.
Seal: Method 112 of MIL-STD-202, test condition letter A, or in accordance with MIL-PRF-19978 (alternative test).
Barometric pressure: In accordance with MIL-PRF-19978; terminal D capacitors not applicable.
Test condition letter B (3.44 inches of mercury - 50,000 feet).
Test points - Between ungrounded terminal and case.
Test potential - 125 percent of dc rated voltage.
Insulation resistance (IR):
Terminal to terminal - See table I.
Terminals to case - Greater than 10,000 megohms.
Vibration:
Low frequency (grade 1) - Method 201 of MIL-STD-202.
High frequency (grade 3) - Method 204 of MIL-STD-202, test condition B, with the following exception:
Direction and duration of motion - 4 hours in each of two mutually perpendicular directions
(total of 8 hours), one parallel and the other perpendicular to the cylindrical axis.
Salt spray: In accordance with MIL-PRF-19978.
Solderability: Not applicable.
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