MIL-PRF-19500/356L
TABLE II. Group E inspection (all quality levels except die) - for qualification and requalification only.
MIL-STD-750
Inspection 1/ 2/
Sample plan
Method
Conditions
Subgroup 1
22 devices, c = 0
Thermal shock
1056
20 cycles, condition D except low temperature shall be
achieved using liquid nitrogen (-195�C). Perform a
visual inspection for cracked glass.
-65�C to +175�C, 500 cycles.
Temp cycling
1051
Hermetic seal
1071
Electrical measurements
Subgroup 2
22 devices, c = 0
Intermittent operation life
1037
+95�C minimum, L = .375 inch (9.53 mm),
ton = toff = 3 minutes minimum for 10,000 cycles. No
heat sink or forced air cooling on the devices shall be
permitted.
Electrical measurements
Subgroup 4
N/A
See MIL-PRF-19500.
Thermal impedance
curves
Subgroup 5
22 devices, c = 0
Barometric pressure
1001
VR = column 11 of table IV herein, (1N4990 - 1N4996
(reduced)
only) pressure = 8 mm Hg.
Subgroup 6
Not applicable
Subgroup 8
Not applicable
Subgroup 9
n = 45
Resistance to glass
1057
Condition B. Step stress to destruction by increased
cracking
cycles or up to a maximum of 25 cycles.
1/ Unless otherwise specified, for sampling plan, see MIL-PRF-19500.
2/ A separate sample may be pulled for each test.
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