MIL-PRF-19500/455K
TABLE IV. Group E inspection (all quality levels) - for qualification only.
Inspection
Sample plan
Method
Conditions
Subgroup 1
45 devices
c=0
Temperature cycling
1051
Test condition C, 500 cycles.
(air to air)
Hermetic seal
1071
Fine leak
Gross leak
Electrical measurements
Subgroup 2
45 devices
c=0
Intermittent life
1037
VCB = 10 V dc, 6,000 cycles.
Electrical measurements
Subgroup 4
Sample size
N/A
Thermal impedance
curves
Subgroup 5
3 devices,
c=0
Barometric pressure
1001
Normal mounting pressure = 8 mm Hg ±2 mm Hg for 60 s
(reduced)
(minimum) Unless otherwise specified, the device shall
be subjected to the maximum voltage it would be
subjected to under rated operating conditions.
Subgroup 8
45 devices
c=0
Condition A for devices ≥ 400 V,
Reverse stability
1033
Condition B for devices < 400 V.
21
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