MIL-PRF-19500/625A
4.3 Screening (JANS, JANTX and JANTXV levels only). Screening shall be in accordance with MIL-PRF-19500 (Appendix E, table
IV), 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
Measurement
appendix E,
table IV of MIL-
JANS level
JANTX and JANTXV levels
PRF-19500)
3c 1/
Thermal impedance (see 4.5.5)
Thermal impedance (see 4.5.5)
9
Not applicable
IR1, VF1, or VF2
IR1, VF1, or VF2 , ĆIR1 ≤ ±100 percent of initial
11
IR1, VF1, or VF2
value or ± 50 nA, which ever is greater.
ĆVf1 ≤ ±0.03 V dc
12
See 4.3.1
See 4.3.1
Subgroup 2 of table I herein; ĆIR1
≤
Subgroups 2 and 3 of table I herein; ĆIR1
≤
13 2/
± 100 percent of initial or 50 nA dc,
± 100 percent of initial value or 50 nA, whichever
whichever is greater. ĆVF1 ≤ ± 0.03 V dc.
is greater. ĆVF1 ≤ 0.03 V dc. Reverse scope
Reverse scope display (see 4.5.2).
display (see 4.5.2).
1/
Thermal impedance shall be performed any time after sealing provided temperature cycling is
performed in accordance with MIL-PRF-19500, screen 3 prior to this test.
2/
When thermal impedance is performed prior to screen 13, it is not required to be repeated in screen 13.
4.3.1 Power burn-in conditions. Power burn-in conditions are as follows (see 4.5.3):
Method 1038, condition B, VR = rated VRWM; f = 50-60 Hz; IO = 200 mA. An alternative of IF (dc) = 200 mA may be used.
TA = room ambient as defined in the general requirements of MIL-STD-750, (see 4.5).
4.4 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500.
4.4.1 Group A inspection. Group A inspection shall be conducted in accordance appendix E, table 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
appendix E, table VIa (JANS) and table VIb (JAN, JANTX, and JANTXV) of MIL-PRF-19500. Electrical measurements (end-points)
requirements shall be in accordance with the applicable steps and footnotes of table I, group A, subgroup 2 herein.
4.2.2.1 Group B inspection, appendix E, table VIa (JANS) of MIL-PRF-19500.
Subgroup
Method
Conditions
V(pk) = rated VRWM; IO shall be a maximum of 200 mA, 2,000 cycles. TA = room
4
1037
ambient as defined in the general requirement of MIL-STD-750 (see 4.5);
f = 50 -60 Hz (see 4.5.1); ON time, OFF time, and IO shall be adjusted to achieve a
delta lead temperature at L = .953 mm (.375 inch) from the body of 85°C, -5°C
+15°C. Cycle time shall be a minimum of three minutes.
IO = 200 mA dc; VR = rated VRWM (see 1.3); f = 50-60 Hz (see 4.5.1); TA = 150°C
5
1027
minimum. Increase TA or IO as required to achieve junction temperature as
specified in MIL-PRF-19500.
7
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