MIL-PRF-19500/413F
* 4.3 Screening. 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
of MIL-PRF-19500)
JANTX and JANTXV levels
(1) 3c
Thermal impedance (see 4.3.2).
ICEX1.
9
11
ICEX1 and hFE2;
ΔICEX1 = 100 percent of initial value or 2 μA dc,
whichever is greater.
12
Burn-in (see 4.3.1).
13
Subgroup 2 of table I herein.
ΔICEX1 = 100 percent of initial value or 2 μA dc,
whichever is greater;
ΔhFE2 = ±25 percent of initial reading.
(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: TA ≤ +35°C; VCB = 25 V dc ±5 V dc;
TJ = +187.5°C ±12.5°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 appropriate).
Measurement delay time (tMD) = 70 μs max. See table III, group E, subgroup 4 herein.
4.4 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500 and as
specified herein.
4.4.1. Group A inspection. Group A inspection shall be conducted in accordance with table E-V of
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 as follows. Electrical
measurements (end-points) shall be in accordance with table I, subgroup 2 herein. Delta requirement shall be in
accordance with table II herein.
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