MIL-PRF-19500/467A
4.4 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500 and as
follows.
a. If the manufacturer chooses the following option(s) for testing, the sample units that are to be used in group
C inspection shall be designated as such, prior to conducting the referenced group B tests. Moreover, the
number of failed diodes to be counted for lot acceptance or rejected as a result of group C test shall be
equal to all failed diodes of the test in group B inspection, which were predesignated for use in group C
inspection, plus any additional failures occurring group C testing. For each life test in group C inspection,
the manufacturer has the option of using all, or a portion of, the sample already subjected to 340 hours of
group B life testing for an additional 660 hours of testing to meet the 1,000 hour requirement.
4.4.1 Group A inspection. Group A inspection shall be conducted in accordance with table E-V of
MIL-PRF-19500, and table I herein.
4.4.2 Group B inspection. Group B inspection shall be conducted in accordance with the conditions specified for
subgroup testing in table E-VIb of MIL-PRF-19500 and herein. Electrical measurements (end-points) shall be in
accordance with the inspections of table I, subgroup 2 herein.
4.4.2.1 Group B inspection, table E-VIb of MIL-PRF-19500.
Subgroup
Method
Condition
Test condition A, except T(high) = +100°C (25 cycles); time at temperature
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extremes 10 minutes minimum.
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Fine leak: Test condition G or H (for condition H, leak testing 2 hours after
pressurization is acceptable).
Gross leak: Test condition A, C, D, E, J, or K except that leak indicator fluid
shall be maintained at +100°C ± 5°C.
IF = 50 mA dc; TA = +25°C; t = 340 hours + 72, - 24 hours (see 4.4.a).
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4.4.3 Group C inspection. Group C inspection shall be conducted in accordance with the conditions specified for
subgroup testing in table E-VII of MIL-PRF-19500 and as follows. Electrical measurements (end-points) shall be in
accordance with the inspections of table I, subgroup 2 herein.
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