MILPRF19500/427P
TABLE II. Group E inspection (all quality levels) for qualification and requalification only - Continued.
Inspection
Sampling
plan
Method
Conditions
Subgroup 8
Peak reverse power
4065
45 devices
Peak reverse power (PRM)= shall be characterized by the supplier
c=0
and the data shall be available to the Government. Test shall be
performed on each sublot.
Electrical
During the PRM test, the voltage (VBR) shall be monitored to verify
measurement
it has not collapsed. Any collapse in VBR during or after the PRM
test or rise in leakage current (IR) after the test that exceeds IR1 in
table I, herein shall be considered a failure to that level of applied
PRM. Progressively higher levels of PRM shall be applied until
failure occurs on all devices within the chosen sample size.
Subgroup 9
45 devices
c=0
1057
Test condition B. Step stress to destruction by increasing cycles
Resistance to glass
or up to a maximum of 25 cycles.
cracking
Subgroup 10
22 devices
c=0
Forward surge
4066
Electrical
measurement
1/
Test method 1056 of MIL-STD-750, test condition D, using liquid nitrogen, may be used in lieu of test method
1051 of MIL-STD-750.
2/
For opaque glass diodes use test method 2068 of MIL-STD-750.
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