MIL-PRF-19500/626A
4.4.1 Group A inspection. Group A inspection shall be conducted in accordance with MIL-PRF-19500 and tables I and III herein. The
following test conditions shall be used for ZθJX, group A inspection:
a.
IM measure current - - - - - - - - - - - - - - 10 mA.
b.
IH forward heating current - - - - - - - - - - 5 - 50 A.
c.
tM heating time - - - - - - - - - - - - - - - - 50 ms.
tMS measurement delay time - - - - - - - - - - 100 µs minimum.
d.
The maximum limit for ZθJX under these test conditions are ZθJX(max) = 3.8°C/W. For -US devices, ZθJX(max) = 3.3°C/W.
4.4.2 Group B inspection. Group B inspection shall be conducted in accordance with the conditions specified for subgroup testing in
appendix E; table VIa (JANS) and VIb (JANTX and JANTXV) of MIL-PRF-19500. Electrical measurements (end-points) and delta
requirements shall be in accordance with the applicable steps of table I, group A, subgroup 2 and 4.4.5 herein.
4.4.2.1 Group B inspection, appendix E, table VIa (JANS) of MIL-PRF-19500.
Subgroup
Method
Condition
3
4066
IFSM = rated (see 1.3); 10 surges of 8.3 ms each at 1 minute intervals.
Condition B, TA = +25°C.
4
1037
TA = room ambient as defined in the general requirements of MIL-STD-750 (see
4.5). IF or IO = 2 A minimum for 2,000 cycles.
IO = 2 A minimum, adjust TA or IO to achieve an average TJ ≥ +250°C.
5
1027
4.4.2.2 Group B inspection, appendix E, table VIb (JANTX and JANTXV) of MIL-PRF-19500.
Subgroup
Method
Condition
3
4066
IFSM = rated (see 1.3); 10 surges of 8.3 ms each at 1 minute intervals.
Condition B, TA = +25°C.
4
1037
TA = room ambient as defined in the general requirements of MIL-STD-750 (see
4.5). IF or IO = 2 A minimum for 2,000 cycles.
5
3101
Not applicable.
4.4.3 Group C inspection. Group C inspection shall be conducted in accordance with the conditions specified for subgroup testing in
appendix E, table VII of MIL-PRF-19500. Electrical measurements (end-points) and delta requirements shall be in accordance with the
applicable steps of table I, group A, subgroup 2 and 4.4.5 herein.
4.4.3.1 Group C inspection, appendix E, table VII of MIL-PRF-19500.
Subgroup
Method
Condition
2
2036
Test condition A, weight = 10 pounds, t = 15 seconds.
3
Not applicable.
6
1037
TA = room ambient as defined in the general requirements of MIL-STD-750 (see
4.5). IF or IO = 2 A minimum for 6,000 cycles.
5
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