MIL-PRF-19500/501E
4.3 Screening (JANTX and JANTXV levels). Screening shall be in accordance with table E-IV of
MIL-PRF-19500, and as specified herein. The following measurements shall be made in accordance with table I
herein. Devices that exceed the limits of table I herein shall not be acceptable.
Screen (see table E-IV
Measurement
JANTX and JANTXV levels only
Thermal impedance (see 4.3.2).
(1) 3c
9
ICEX1
11
ICEX1, hFE2.
Subgroup 2 of table I herein;
ĆICEX1 = 100 percent of initial value or 2 µA dc, whichever is
greater.
See 4.3.1.
12
13
Subgroup 2 of table I herein;
ĆICEX1 = 100 percent of initial value or 2 µA dc, whichever is
greater;
ĆhFE2 = ±40 percent of initial value.
(1) Shall be performed anytime after temperature cycling, screen 3a; and does not need to be repeated in
screening requirements.
4.3.1 Power burn-in conditions. Power burn-in conditions are as follows:
TJ = +162.5°C ±12.5°C; VCE ≥ 10 V dc, TA ≤ +100°C.
NOTE: No heat sink or forced air cooling on the devices shall be permitted.
4.3.2 Thermal impedance. The thermal impedance measurements shall be performed in accordance with
method 3131 of MIL-STD-750 using the guidelines in that method for determining IM, IH, tH, tSW, (and VH where
4.4 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500.
* 4.4.1 Group A inspection. Group A inspection shall be conducted in accordance with appendix E, table E-V of
MIL-PRF-19500, and table I herein. Electrical measurements (end-points) 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 appendix E, table E-VIB (JAN, JANTX and JANTXV) of MIL-PRF-19500. Electrical
measurements (end-points) shall be in accordance with table I, subgroup 2 herein and delta measurements shall be
in accordance with table II herein.
4.4.2.1 Group B inspection, appendix E, table E-VIB (JAN, JANTX and JANTXV) of MIL-PRF-19500.
Subgroup
Method
Conditions
VCB ≥ 10 V dc; ĆTJ = between cycles ≥ +100°C. ton = toff = 3 minutes for 2,000
B3
1037
cycles. No heat sink or forced-air cooling on the devices shall be permitted.
B5
Not applicable.
6
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