MIL-PRF-19500/391N
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 MILPRF195000 and 4.4.2.1 herein. Electrical
measurements (end-points) shall be in accordance with group A, subgroup 2. See 4.4.2.2 herein for JAN, JANTX,
and JANTXV group B testing. Electrical measurements (end-points) for JAN, JANTX, and JANTXV shall be after
4.4.2.1 Group B inspection, table E-VIa (JANS) of MILPRF19500.
Subgroup
Method
Condition
VCB = 10 V dc, 2,000 cycles, adjust device current, or power, to achieve a minimum
B4
1037
ĆTJ of +100°C.
B5
1027
NOTE: If a failure occurs, resubmission shall be at the test conditions of the original
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
TJ = +225°C minimum.
B5
2037
Test condition D.
B6
Not applicable.
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 MILPRF19500 shall apply. In addition, all catastrophic
failures during CI shall be analyzed to the extent possible to identify root cause and corrective action. Whenever a
failure is identified as wafer lot and /or wafer processing related, the entire wafer lot and related devices assembled
from the wafer lot shall be rejected unless an appropriate determined corrective action to eliminate the failures mode
has been implemented and the devices from the wafer lot are screened to eliminate the failure mode.
Step
Method
Condition
Steady-state life: 1,000 hours minimum, VCB = 10 V dc, power shall be applied to
1
1026
achieve TJ = +150°C minimum using a minimum of PD = 75 percent of maximum rated
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, without exceeding max
2
1048
rated VCEO. 48 hours minimum. n = 45 devices, c = 0.
High-temperature life (non-operating), t = 340 hours, TA = +200°C. n = 22, c = 0.
3
1032
13
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