MIL-PRF-19500/617D
4.3 Screening (JANS, JANTX, and JANTXV levels only). Screening shall be in accordance with appendix E, 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
appendix E,
Measurement
table E-IV of
MIL-PRF-19500)
JANS level
JANTX and JANTXV levels
3b
Surge (see 4.3.1)
Surge (see 4.3.1)
(1) 3c
Thermal impedance (see 4.3.2)
Thermal impedance (see 4.3.2)
Not applicable
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VF1 and IR1
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Method 1038 of MIL-STD-750, test
Not applicable
condition A; t = 48 hrs: VR = 80 percent of
rated VR.
VF1 and IR1; VF1 = 0.1 V (pk);
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VF1 and IR1
IR1 = 10 A dc or 100 percent from the
initial value, whichever is greater.
Method 1038 of MIL-STD-750, test condition A;
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Method 1038 of MIL-STD-750, test
t = 48 hours, VR = 80 percent of rated VR
condition B; t = 240 hours (see 4.3.3)
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Subgroup 2 of table I herein;
Subgroup 2 of table I herein;
VF1 and IR1; VF1 = 0.1 V (pk);
VF1 and IR1; VF1 = 0.1 V (pk);
IR1 = 10 A dc or 100 percent from the
IR1 = 10 A dc or 100 percent from the initial
initial value, whichever is greater.
value, whichever is greater.
(1)
Shall be performed anytime after temperature cycling, screen 3a; and does not need to be
repeated in screening requirements.
4.3.1 Surge current. Surge current, method 4066 of MIL-STD-750. IO = 0; VRM(w) = 0; IFSM = see 1.3; six surges;
TA = 25C, tp = 8.3 ms, one minute minimum time between surges.
4.3.2 Thermal impedance. The thermal impedance measurements shall be performed in accordance with method
3101 or 4081, as applicable, of MIL-STD-750 using the guidelines in that method for determining IM, IH, tH, tSW (VC
and VH where appropriate). See table II, group E, subgroup 4 herein.
4.3.3 Burn-in conditions. Burn-in conditions are as follows: TA = room ambient as defined in the general
requirements of MIL-STD-750 (see 4.5). VR = rated. Adjust IO or IF to achieve TJ = 150C minimum.
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 with MIL-PRF-19500, and table I
herein.
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