MIL-PRF-14409J
TABLE V. Group C inspection.
Requirement
Test method
Test
Sampling procedure
paragraph
paragraph
Subgroup I (semiannually)
Insulation resistance (at high temperature)
12 samples per
Temperature coefficient and capacitance drift
characteristic
Thermal shock 1/
1 failure
Subgroup II (semiannually)
Driving torque 2/
12 samples per
Terminal strength
characteristic
Resistance to soldering heat 1/
1 failure
Subgroup III (semiannually) 3/
Immersion (sealed units only)
12 samples per
Salt atmosphere (corrosion)
characteristic
1 failure
Subgroup IV (annually)
Moisture resistance 1/
12 samples per
characteristic
1 failure
Subgroup V (annually)
Shock (specified pulse)
12 samples per
Vibration, high frequency
characteristic
1 failure
1/ Capacitance, insulation resistance, and quality factor will follow last test of subgroups I, II, and IV.
2/ If the manufacturer can demonstrate that this test has been performed five consecutive times with zero failures,
this test, with the approval of the qualifying activity, can be deleted. The manufacturer, however, shall perform
this test every 3 years after the deletion as part of long term design verification. If the design, material,
construction processing of the part is changed, or if there are any quality problems, the qualifying activity may
require resumption of the specified testing. Deletion of testing does not relieve the manufacturer from meeting the
test requirements in case of dispute.
3/ Electrical tests are not required on unsealed units.
4.5 Methods of examination and test.
4.5.1 Thermal shock (see 3.5). Capacitors shall be tested in accordance with method 107 of MIL-STD-202. The
following details shall apply:
a. Test condition: B (styles PC26 (characteristic T), PC32, and PC34) or A (all other styles), except that in
step 3, capacitors shall be tested at the high test temperature, ±5°C (see 3.1).
b. Measurements before and after cycling: Not applicable.
After the test, capacitors shall be visually examined for evidence of fracture, corrosion, or loosening of mechanical
connections.
4.5.2 Visual and mechanical examination. Capacitors shall be examined to verify that the material, design,
construction, physical dimensions, marking, and workmanship are in accordance with the applicable requirements
10
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business