MIL-PRF-19500/397J
* TABLE II. Group E inspection (all quality levels) for qualification and re-qualification only.
Inspection
MIL-STD-750
Qualification
Method
Conditions
Subgroup 1
45 devices
c=0
Temperature cycling
1051
Test condition C, 500 cycles.
(air to air)
Hermetic seal
Fine leak
1071
Gross leak
Electrical measurements
See table I, subgroup 2 herein.
Subgroup 2
45 devices
c=0
Intermittent life
1037
VCB = 10 V dc, 6,000 cycles.
Electrical measurements
See table I, subgroup 2 herein.
Subgroup 4
Thermal impedance,
3131
Each supplier shall submit their (typical)
Sample size
thermal resistance curves
maximum design thermal impedance curves to
N/A
the qualifying activity. In addition, the optimal
test conditions and ZθJX limit shall be provided to
the qualifying activity in the qualification report.
Subgroup 5
5 devices
c=0
Barometric pressure
1001
VCBO = 350 V, IC = 10 nA, condition D,
(2N3743, 2N3743U4,
Pressure = 8 mm HG, normal mounting,
2N4931, and 2N4931U4
t = 60 seconds minimum.
only)
Subgroup 6
3 devices
ESD
1020
Subgroup 8
45 devices
c=0
Reverse stability
1033
Condition B for devices < 400 V.
15
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