MIL-PRF-19500/312E
* 4.3 Screening (list applicable JAN levels). Screening shall be in accordance with table 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 IV
Measurement
of MIL-PRF-19500)
JANTX level
(1) 3c
Thermal impedance method 3131 of
MIL-STD-750. (see 4.3.3)
7
Optional
11
ICBO1 and hFE2
12
See 4.3.1
Subgroup 2 of table I herein; ĆICBO1 = 100
13
percent of initial value or 10 nA dc,
whichever is greater; ĆhFE2 = ±15 percent of
initial value.
14
Required
(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: VCB = 10 - 30 V dc; power shall be
applied to achieve TJ = +135°C minimum and a minimum power dissipation = 75 percent of maximum rated PT (see
1.3). NOTE: No heat sink or forced air cooling on the devices shall be permitted.
4.3.2 Screening (JANHC). Screening of JANHC die shall be in accordance with MIL-PRF-19500. As a minimum,
die shall be 100-percent probed to insure compliance with table I, group A, subgroup 2.
* 4.3.3 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 (VC and VH where
appropriate). Measurement delay time (tMD) = 70 µs max. The thermal impedance limit used in screen 3c and
table I, subgroup 2 shall be set statistically by the supplier over several die lots and submitted to the qualifying activity
for approval.
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 MIL-PRF-19500 and table I
herein.
* 4.4.2 Group B inspection. Group B inspection shall be conducted in accordance with 4.4.2.1 herein. Electrical
measurements (end-points) and delta requirements shall be after each step in 4.4.2.1 and shall be in accordance with
table I, subgroup 2 and table II herein.
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