MIL-PRF-19500/253L
4.4 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500, and as
specified herein. If alternate screening is being performed in accordance with MIL-PRF-19500, a sample of screened
devices shall be submitted to and pass the requirements of group A1 and A2 inspections only (table E-VIb, group B,
subgroup 1 is not required to be performed again if group B has already been satisfied in accordance with 4.4.2).
4.4.1 Group A inspection. Group A inspection shall be conducted in accordance with MIL-PRF-19500 and table I
herein.
* 4.4.2 Group B inspection. Group B inspection shall be conducted in accordance with the tests and conditions
specified for subgroup testing in table E-VIa (JANS) of MIL-PRF-19500 and 4.4.2.1. Electrical measurements (end-
points) and delta requirements shall be in accordance with group A, subgroup 2 and table IV herein: delta
requirements only apply to subgroups B4, and B5. See 4.4.2.2 for JAN, JANTX, and JANTXV group B testing.
Electrical measurements (end-points) and delta requirements for JAN, JANTX, and JANTXV shall be after each step
4.4.2.1 Group B inspection, table E-VIa (JANS) of MIL-PRF-19500.
Subgroup Method
Condition
VCB = 10 V dc.
B4
1037
B5
1027
resubmission shall be at the test conditions of the original sample.)
Option 1: 96 hours minimum sample size in accordance with MIL-PRF-19500, table E-VIa,
adjust TA or PD to achieve TJ = +275°C minimum.
Option 2: 216 hours minimum, sample size = 45, c = 0; adjust TA or PD to achieve a
TJ = +225°C minimum.
4.4.2.2 Group B inspection, (JAN, JANTX, and JANTXV). Separate samples may be used for each step. In the
event of a lot failure, the resubmission requirements of MIL-PRF-19500 shall apply. In addition, all catastrophic
failures during CI, conformance inspection, shall be analyzed to the extent possible to identify root cause and
corrective action.
Step
Method
Condition
1
1026
Steady-state life: 1,000 hours minimum, VCB = 10 V dc, power shall be applied to achieve
TJ = +150°C minimum using a minimum of PD = 75 percent of maximum rated PT as defined
in 1.3. n = 45 devices, c = 0. The sample size may be increased and the test time
decreased so long as the devices are stressed for a total of 45,000 device hours minimum,
and the actual time of test is at least 340 hours.
Blocking life: TA = +150°C, VCB = 80 percent rated voltage. 48 hours minimum. n = 45
2
1048
devices, c = 0.
High-temperature life (non-operating), t = 340 hours, TA = +200°C. n = 22, c = 0.
3
1032
10
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