MIL-PRF-19500/616G
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
1a
Required
Not required
1b
Required
Required (JANTXV only)
Required
3a
Required
Surge (see 4.3.1)
3b
Surge (see 4.3.1)
Thermal impedance (see 4.3.2)
Thermal impedance (see 4.3.2)
(1) 3c
6
Not applicable
Not applicable
9
VF1 and IR1
Not applicable
10
Method 1038 of MIL-STD-750, test condition
Not applicable
A; t = 48 hours; VR = 80 percent of rated VR.
VF1 and IR1; VF1 = 0.1 V (pk);
11
VF1 and IR1
IR1 = 2 A dc or 100 percent from
the initial value; whichever is greater.
12
Method 1038 of MIL-STD-750, test condition
Method 1038 of MIL-STD-750, test condition
B; t = 240 hours; (see 4.3.3)
A; t = 48 hours; VR = 80 percent of rated VR.
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Subgroup 2 and 3 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 = 2 A dc or 100 percent from
IR1 = 2 A dc or 100 percent from
the initial value; whichever is greater.
the initial 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 4.5 of MIL-STD-750. 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 and as
specified herein.
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