MIL-PRF-22E
TABLE VII. Group A sampling plan.
Lot size
Sample size
1 to
12
100 percent
13 to
150
13
151 to
280
20
281 to
500
29
501 to
1,200
34
1,201 to
3,200
42
3,201 to
10,00
50
10,001 to
35,000
60
35,001 to
50,000
74
150,001 to
500,000
90
500,001and over
102
4.6.1.3 Group B inspection. Group B inspection shall consist of the tests specified in table VIII, in the order shown,
and the sample shall be selected from inspection lots that have passed group A inspection.
TABLE VIII. Group B inspection. 1/
Requirement
Method
Sampling
Inspection 2/
Paragraph
paragraph
plan
Terminal strength
Shock (specified pulse)
Rotational load life
4.6.1.3.1
Dielectric withstanding voltage
4.7.2 to 4.7.2.2 inclusive
Torque
4.7.4 to 4.7.4.3 inclusive
1/ If the manufacturer can demonstrate that this test has been performed 5 consecutive times with
zero failures, the frequency of this test, with approval of the qualifying activity, can be performed
on an annual basis. If the design, material, construction or processing of the part is changed, or
if there are any quality problems or failure, the qualifying activity may require resumption of the
original test.
2/ Failure of a resistor in one or more tests shall be charged as a single defective.
4.6.1.3.1 Sampling plan. A sample of parts shall be randomly selected in accordance with table IX. If one or more
defects are found, the lot shall be screened and defectives removed. After screening and removal of defectives, a
new sample of parts shall be randomly selected in accordance with table IX. If one or more defects are found in the
second sample, the lot shall not be supplied to this specification.
TABLE IX. Group B sampling plan.
Sample
Lot size
size
1
to
25
3
26
to
50
5
51
to
90
6
91
to
150
7
151
to
280
10
281
to
500
11
501
to
1,200
15
1,201
to
3,200
18
3,201
to
10,000
22
10,001
to
35,000
29
35,001 and over
29
10
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