MIL-PRF-11693E
4.6.2.3 Noncompliance (applicable to both ER and non-ER parts). If a sample fails to pass group B inspection, the
supplier shall take corrective action on the materials or processes, or both, as warranted, and on all units of product
which can be corrected and which were manufactured under essentially the same conditions, with essentially the
same materials, processes, etc., and which are considered subject to the same failure. Acceptance of the product
shall be discontinued until corrective action, acceptable to the Government, has been taken. After the corrective
action has been taken, group B inspection shall be repeated on additional sample units (all inspection, or the
inspection which the original sample failed, at the option of the Government). Group A inspection may be re-
instituted; however, final acceptance shall be withheld until group B re-inspection has shown that the corrective action
was successful. In the event of failure after reinspection, information concerning the failure and corrective action
taken shall be furnished to the cognizant inspection activity and the qualifying activity.
4.7 Methods of examination and test.
4.7.1 Visual and mechanical examination. Capacitors shall be examined to verify that the materials, design,
construction, physical dimensions, marking, and workmanship are in accordance with the applicable requirements
4.7.2 Seal (see 3.6).
4.7.2.1 Solid-filled and liquid-impregnated capacitors. While at room temperature, capacitors whose filling material
will be solid at the high ambient test temperature, and liquid-impregnated capacitors in which no filling compound is
used, shall be immersed for at least 1 minute in oil or water maintained at a temperature of 5°C +5°C, -0°C above
the high ambient test temperature.
4.7.2.2 Liquid-filled capacitors. Capacitors whose filling material will be liquid at the high ambient test temperature,
shall be placed with the terminals facing horizontal and brought to a case temperature of 5°C, +5°C, -0°C above the
high ambient test temperature. After 10 minutes at this case temperature, the capacitors shall be turned through
180° onto another surface with the terminals still horizontal and kept in this position for 10 minutes with the case
temperature maintained within the same limits. An oil spot or spots appearing on the paper or any oil impregnant
appearing on the outside of the case is considered evidence of leakage.
4.7.3 Terminal strength (pull test) (see 3.7). Capacitors shall be tested in accordance with method 211 of MIL-
STD-202. The following details and exceptions shall apply:
a. Test condition letter: A.
b. Method of holding: normal mounting means.
c. Applied force: 5 pounds +3, -0, ounces.
d. Duration of applied force: 30 +5, -0 seconds.
4.7.4 Dielectric withstanding voltage (see 3.8).
4.7.4.1 For qualification inspection. Capacitors shall be tested in accordance with method 301 of MIL-STD-202.
The following details shall apply:
a. Magnitude and nature of test voltage: 200 percent of the rated dc voltage. The ac ripple shall not exceed 2
percent.
b. Duration of application of test voltage: 1 minute ±5 seconds.
c. Points of application of test voltage: Between the case and either terminal.
d. Limiting value of surge current: Between 5 milliamperes and 1 ampere.
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