MIL-PRF-19500/429N
TABLE II. Group E inspection (all quality levels) for qualification and requalification only.
Inspection
Sampling plan
Method
Conditions
Subgroup 1
45 devices
c=0
Thermal shock
1056
20 cycles, condition D except low temperature shall be
achieved using liquid nitrogen (-195°C). Perform a
visual for cracked glass.
500 cycles, -65°C to +175°C.
Temperature cycling
1051
Hermetic seal
1071
Gross leak
Electrical measurements
Subgroup 2
22 devices
c=0
1,000 hours; VR = 80 85 percent of rated VRWM (see
Steady state dc blocking life
1048
col. 2 of 1.3).
Electrical measurements
See table I, subgroup 2 herein except for thermal
impedance and table III, step 1. For irradiated devices,
include trr as an end-point measurement.
Subgroup 4 1/
Thermal impedance curves
See MIL-PRF-19500.
Subgroup 5
22 devices
c=0
Barometric pressure,
1001
Pressure 1N5617, 1N5619 = 8 mm Hg (100,000 ft);
1N5621, 1N5623 = 33 mm Hg (70,000 ft); VR = VRWM
reduced (altitude operation)
(see col. 2 of 1.3); t = 1 minute (minimum).
See footnote at end of table.
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