MIL-PRF-19500/181J
4.3 Screening (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)
JANTX and JANTXV levels
(1) 3c
Thermal impedance see 4.3.2
9
Not applicable
10
48 hours minimum
11
ICBO2, hFE3
12
See 4.3.1
Subgroup 2 of table I herein; ĆICBO2 = 100 percent of initial value
13
or 5 nA dc, whichever is greater; ĆhFE3 = +15 percent
(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 using a minimum PD = 75 percent of PT maximum rated as defined in 1.3.
With approval of the qualifying activity and preparing activity, alternate burn-in criteria (hours, bias conditions, TJ, and
mounting conditions) may be used for JANTX and JANTXV quality levels. A justification demonstrating equivalence
is required. In addition, the manufacturing site's burn-in data and performance history will be essential criteria for
burn-in modification approval.
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. 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 group A1 and A2 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 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 4.4.2.1 for JAN, JANTX, and JANTXV group B testing. Electrical measurements (end-points) and
delta requirements for JAN, JANTX, and JANTXV shall be after each step in 4.4.2.1 and shall be in accordance with
table I, subgroup 2, and 4.5.2 herein.
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