MIL-PRF-19500/225K
* 4.3 Screening (list applicable 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
of MIL-PRF-19500)
JANTX and JANTXV level
(1) 3c
Thermal impedance (see 4.3.2),
method 3131 of MIL-STD-750.
9
Not applicable.
11
hFE2; ICBO1
12
See 4.3.1.
ĆICBO1 = 100 percent of initial value
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or 5 nA dc; whichever is greater;
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 Burn-in conditions. Burn-in conditions are as follows: VCB = 10 - 30 V dc. Power shall be applied to
achieve TJ = +135°C minimum using a minimum PD = 75 percent of PT maximum, TA ambient rated as defined in 1.3.
NOTE: No heat sink or forced air cooling of 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 (VC 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.
4.4.1 Group A inspection. Group A inspection shall be conducted in accordance with MIL-PRF-19500, and table I
herein. The test conditions for ZθJX shall be those used in 4.3.2.
4.4.2 Group B inspection. Group B inspection shall be conducted in accordance with the conditions specified in
4.4.2.1 herein. Electrical measurements (end-points) shall be in accordance with the applicable inspections of table I,
group A, subgroup 2 herein.
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