MIL-PRF-19500/302C
4.VERIFICATION
4.1 Classification of Inspections. The inspection requirements specified herein are classified as follows:
a. Qualification inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 Qualification inspection. Qualification inspection shall be in accordance with MIL-PRF-19500.
4.3 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500, and as specified herein.
4.3.1 Group A inspection. Group A inspection shall be conducted in accordance with MIL-PRF-19500, and table I herein.
4.3.2 Group B inspection. Group B inspection shall be conducted in accordance with the conditions specified for subgroup
testing in VIb (JAN) of MIL-PRF-19500. Electrical measurements (end-points) shall be in accordance with table I, subgroup 2
herein.
Subgroup
Method
Condition
10 V dc; adjust PT to achieve TJ = +150 C minimum; TA
+35 C.
B3
1026
VCB
B5
Not applicable.
4.4.3 Group C inspection. Group C inspection shall be conducted in accordance with the conditions specified for subgroup
testing in table VII of MIL-PRF-19500. Electrical measurements (end points) shall be in accordance with table I, subgroup 2 herein.
Subgroup
Method
Condition
C2
2036
Test condition E.
10 V dc; adjust PT to achieve TJ = +150 C minimum; TA
+35 C.
C6
1026
VCB
4.4 Method of inspection. Methods of inspection shall be as specified in the appropriate tables and as follows.
4.4.1 Pulse measurements. Conditions for pulse measurement shall be as specified in section 4 of MIL-STD-750.
4.4.2 Collector-base feedback capacitance. This test shall be conducted in accordance with method 3236 of MIL-STD-750,
except that the case and emitter leads shall be connected to the guard terminal of the measuring equipment.
4.4.3 Noise figure test. Noise figure shall be measured using a HP 342A voltmeter and 343A noise source in conjunction with the
small signal power gain test circuit or equivalent.
4.4.4 Disposition of "CASE" lead. Except for the following tests, the "CASE" lead shall be "floating" during all electrical tests and
measurements: noise figure; small-signal power gain; collector-base time constant; and magnitude of |hfe |. These tests shall be
conducted with the "CASE" lead connected to a common rf chassis ground.
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