MIL-PRF-19500/433H
* 4.3 Screening (JANS, JANTX, and JANTXV levels only). 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)
JANS level
JANTX and JANTXV levels
(1) 3c
Thermal impedance (see 4.3.2)
Thermal impedance (see 4.3.2)
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ICEX1 and hFE2
ICEX1
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ICEX1 and hFE2
ICEX1 and hFE2;
ĆICEX1 ≤ 100 percent of initial value
ĆICEX1 ≤ 100 percent of initial value
or 5 nA dc, whichever is greater.
or 100 nA dc, whichever is greater.
ĆhFE2 ≤ ± 15 percent of initial value
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See 4.3.1
See 4.3.1
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Subgroup 2 of table I herein;
Subgroup 2 of table I herein;
ĆICEX1 ≤ 100 percent of initial value
ĆICEX1 ≤ 100 percent of initial value
or 50 nA dc, whichever is greater;
or 100 nA dc, whichever is greater;
ĆhFE2 ≤ ± 15 percent of initial value
ĆhFE2 ≤ ± 15 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 = +187.5 ± 12.5°C; VCE = +30 V dc,
±10 V dc; TA = room ambient as defined in the general requirements of MIL-STD-750.
* 4.3.2 Thermal impedance. The thermal impedance measurements shall be performed in accordance with method
3161 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 II, group E, subgroup 4 herein.
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 table I, subgroup 1 and 2 inspection 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 table E-V of MIL-PRF-19500
and table I 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-VIA (JANS) and 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.
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