MIL-PRF-19500/609K
4.3.2 Power burn-in conditions. Power burn-in conditions are as follows (See 4.5.1): Method 1038 of
MIL-STD-750, condition B. VR = rated VRWM; f = 50 - 60 Hz; IO = 300 mA dc or IF = 300 mA dc minimum.
TA = 75°C maximum. The maximum current density of small die shall be submitted to the qualifying activity for
approval. Alternate mounting conditions shall be submitted to the qualifying activity for approval. With approval of the
qualifying activity and preparing activity, alternate burn-in criteria (hours, bias conditions, and mounting conditions)
may be used. 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.
4.3.3 Thermal impedance measurements. The thermal impedance measurements shall be performed in
accordance with method 3101 or 4081 of MIL-STD-750, as applicable, using the guidelines in that method for
determining IH and IM. Measurement delay time (tMD) = 70 µs max, tH shall be 10 ms maximum. The thermal
impedance limit shall comply with the thermal impedance graphs in figures, 6, 7, and 8 (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
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 table E-V of MIL-PRF-19500,
table I herein, and as specified 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 conditions specified for
subgroup testing in tables E-VIA (JANS) and 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. Read
and record the change in thermal impedance. The accept criteria is a maximum change of 10 percent for group B,
subgroups 3 and 4 for JANS, or group B, subgroup 2 for JANTX or JANTXV.
* 4.4.2.1 Group B inspection, table E-VIA (JANS) of MIL-PRF-19500.
Subgroup
Method
Conditions
0°C to 100°C, 25 cycles.
B3
1056
-55°C to 175°C, 100 cycles.
B3
1051
B3
2101
Decap analysis; scribe and break only
*
B4
1037
ton = toff = 1 minute minimum; IO = 300 mA pulsed; in lieu of ac conditions, a dc
condition of IF = 300 mA may be used.
B5
1027
IO = 300 mA minimum, VR = rated VRWM, f = 50 - 60 Hz (see 4.5.1).
Option 1: Adjust IO or TA to obtain a minimum TJ of +225°C, t = 216 hours,
n = 45, c = 0.
Option 2: Adjust IO or TA to obtain a minimum TJ of 175°C, t = 1,000 hours,
n = 45, c = 0.
L = .375 inch (9.53 mm); RθJL = 150°C/W maximum,
B6
4081
RθJEC = 40°C/W maximum (see 4.3.3).
9
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