MIL-PRF-19500/551G
4.3.1 Burn-in (HTRB) and steady-state operation life (HTRB) conditions. This test shall be conducted with the
devices subjected to test conditions in the following order of events and conditions:
Pulse in accordance with 4.5.2b herein 20 times (screening and group B operation life test) and 100 times
a.
(group C) at TA = room ambient as defined in the general requirements of MIL-STD-750.
b.
Read and record ID and VBR at TA = room ambient as defined in the general requirements of MIL-STD-750.
Remove defective devices, and record the number of failures.
(1) For 96 hours (JANTX and JANTXV) for the screening test.
(2) For 340 hours (JANTX and JANTXV) for group B, steady-state operation life test.
(3) For 1,000 hours for group C, steady-state operation life test.
Read and record ID and V(BR) at TA = room ambient as defined in the general requirements of MIL-STD-750.
Devices with ĆID > 50 percent (100 percent for steady-state operation life) of initial value, or 20 percent of
column 5 of table II, whichever is greater, or ĆV(BR) = ±2 percent (±5 percent for steady-state operation life) of
initial value shall be considered defective. Remove defective devices and record the number of failures.
4.4 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500 and as herein.
4.4.1 Group A inspection. Group A inspection shall be conducted in accordance with MIL-PRF-19500 and table I
herein. End-point electrical measurements shall be in accordance with table I, subgroup 2 herein.
4.4.2 Group B inspection. Group B inspection shall be conducted in accordance with the conditions specified for
subgroup testing in table E-VIB (JAN, JANTX, and JANTXV) of MIL-PRF-19500 and 4.4.2.1 herein. Electrical
measurements (end-points) shall be in accordance with table I, subgroup 2 herein.
4.4.2.1 Group B inspection, table E-VIB of MIL-PRF-19500.
Subgroup
Method
Conditions
TA = +125°C, (see 4.3.1).
B3
1026
RΘJL ≤ 60°C/W at L = .375 inches (9.53 mm), non-surface mount devices;
B5
4081
RΘJEC ≤ 20°C/W at L = 0 inches for surface mount devices.
8
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