MIL-PRF-19500/544H
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 levels
JANTX and JANTXV levels
(1) 3c
Thermal impedance, method 3131 of
Thermal Impedance, method 3131 of
MIL-STD-750. See 4.3.3.
MIL-STD-750. See 4.3.3.
9
Not applicable
ICES1 and hFE2
10
48 hours minimum
48 hours minimum
ICES1 and hFE2; ĆICES1 = 100 percent of initial
11
ICES1 and hFE2
value or100 nA dc, whichever is greater.
ĆhFE2 = ±20 percent.
See 4.3.2
See 4.3.2
12
13
Subgroup 2 and 3 of table I herein;
Subgroup 2 of table I herein;
ĆICES1 = 100 percent of initial value or
ĆICES1 = 100 percent of initial value or
100 nA dc, whichever is greater.
100 nA dc, whichever is greater.
ĆhFE2 = ±20 percent.
ĆhFE2 = ±20 percent.
(1) Shall be performed anytime after temperature cycling, screen 3a; and does not need to be repeated in
screening requirements.
4.3.1 Screening (JANHC and JANKC). Screening of JANHC and JANKC die shall be in accordance with
MIL-PRF-19500, " Discrete Semiconductor Die/Chip Lot Acceptance". Burn-in duration for the JANKC level follows
JANS requirements; the JANHC follows JANTX requirements.
4.3.2 Power burn-in conditions. Power burn-in conditions are as follows: VCB = 10 - 30 V dc. Power shall be
applied to the device to achieve TJ = +175°C minimum using a minimum PD = 75 percent of PT maximum, TA ambient
rated as defined in 1.3 herein.
4.3.3 Thermal impedance (ZθJX measurements). The ZθJX measurements shall be performed in accordance with
method 3131 of MIL-STD-750 using the guidelines in that method for determining IM, IH, tH, tMD, (and VC where
appropriate). The ZθJX limit used in screen 3c of 4.3 herein shall comply with the thermal impedance graph in figure
9, 10, and 11 (less than or equal to the curve value at the same tH time) and shall be less than the process
determined statistical maximum limit as outlined in method 3131.
4.4 Conformance inspection. Conformance inspection shall be 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. Electrical measurements (end-points) 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 test and conditions
specified for subgroup testing in table E-VIA (JANS) and table E-VIB (JAN, JANTX, and JANTXV) of MIL-PRF-19500
and 4.4.2.1 and 4.4.2.2 herein. Electrical measurements (end-points) shall be in accordance with table I, subgroup 2
herein. Delta measurements shall be in accordance with table IV herein.
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