MIL-C-25F
4.6.8 Salt atmosphere (corrosion) (see 3.11). Capacitors shall be tested in accordance with method 101 of MIL-
STD-202, test condition B. After this test, capacitors shall be examined for evidence of corrosion and obliteration of
marking. Capacitors with painted cases shall be examined for flaking, peeling, or blistering of paint.
4.6.9 Thermal shock and immersion (see 3.12).
4.6.9.1 Thermal shock. Capacitors shall be tested in accordance with method 107 of MIL-STD-202. The following
details and exceptions shall apply:
a. Conditioning prior to first cycle: 15 minutes at room ambient.
b. Test condition: A, except that in step 3, sample capacitors shall be conditioned at high ambient test
temperature (see 3.1).
c. Measurement after cycling: Not applicable.
4.6.9.2 Immersion. Following thermal shock, capacitors shall be tested in accordance with method 104 of MIL-
STD-202. The following details and exceptions shall apply:
a. Test condition: C, except that the duration of each immersion shall be 30 minutes. Change from one
solution to the other shall be made in not more than 3 seconds.
b. Measurements after final cycle: Dielectric withstanding voltage and insulation resistance at +25°C shall be
c. Visual examination: After this test, capacitors shall be visually examined for corrosion and obliteration of
marking.
4.6.11 Terminal strength (see 3.13). Capacitors shall be tested in accordance with method 211 of MIL-STD-202.
The following details and conditions shall apply:
a. Test condition A (pull test): applied force: 5 pounds.
b. Test condition E (torque test): applied force: 2 pound-inch.
4.6.12 Moisture resistance (see 3.14). Capacitors shall be tested in accordance with method 106 of MIL-STD-202.
The following details and exceptions shall apply:
a. Mounting: Capacitors shall be mounted by normal mounting means, except during measurement.
b. Initial measurements: Not applicable.
c. Polarization voltage: 100 volts shall be applied across the terminals of 50 percent of the capacitors. No
potential shall be applied to the remaining 50 percent of the capacitors.
d. Loading voltage: Not applicable.
e. During step 7, capacitors shall be removed from the humidity chamber at the same time each day.
f. Final measurements: Dielectric withstanding voltage and insulation resistance at +25°C shall be measured as
g. Visual examination: After this test, capacitors shall be visually examined for corrosion and obliteration of
marking.
15
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business