MIL-PRF-19500/315G
* 4.4.3 Group C inspection. Group C inspection shall be conducted in accordance with the conditions specified for
subgroup testing in table E-VII of MIL-PRF-19500 and as follows. Electrical measurements (end-points) shall be in
accordance with table I, subgroup 2 herein. Delta measurements shall be in accordance with table III herein.
Subgroup
Method
Condition
*
C2
2036
Test condition A; weight= 10 pounds; time = 15 s.
C2
2036
Thermal strength (terminal torque). Test condition D1; torque = 6 inch-ounces;
t = 15 s; (tubulated leads only).
C2
2036
Terminal strength (stud torque). Test condition D2; torque = 15 inch-pound;
application time = 15 s.
Terminal strength (tension). Test condition A; weight = 7 pounds 5 ounces;
C2
2036
application time = 15 s (tubulated leads only).
TJ = 187.5 ±12.5C; TA 35C; VCE = 25 ±5 V dc.
*
C6
1026
* 4.4.4 Group E inspection. Group E inspection shall be conducted in accordance with the conditions specified for
subgroup testing in appendix E, table E-IX of MIL-PRF-19500 and as specified in table II herein. Electrical
measurements (end-points) shall be in accordance with table I, subgroup 2 herein.
4.5 Methods of inspection. Methods of inspection shall be as specified in the appropriate tables and as follows.
4.5.1 Pulse measurements. Conditions for pulse measurements shall be as specified in MIL-STD-750.
4.5.2 Thermal resistance. Thermal resistance measurements shall be conducted in accordance with method 3131
of MIL-STD-750. The following details shall apply:
a. Collector current magnitude during power applications shall be selected with 0.8 A dc IC 1.2 A dc and
recorded before test is started.
b. Collector to emitter voltage magnitude shall be 20 V dc.
c. Reference temperature measuring point shall be the case.
d. Reference point temperature shall be selected with 25C tR 75C and recorded before the test is started.
e. Mounting arrangement shall be with heat sink to case.
f. Maximum limit of RJC shall be 3.33C/W.
4.5.3 Inspection conditions. Unless otherwise specified herein, all inspections shall be conducted at a case
temperature (TC) of 25C.
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