MIL-PRF-914C
4.6.3.2.1 Subgroup 1. Subgroup 1 tests shall be performed on a production lot basis on 100 percent of lot.
Networks that are out of resistance tolerance, failures for isolated pin resistance and ratio, or which experience a
change in resistance greater than that permitted, shall be removed from the lot and not supplied to this specification.
Lots having more than 10 percent rejects, or one network, whichever is greater, due to exceeding dc resistance
requirements of 3.10, shall not be furnished on contracts.
4.6.3.2.2 Manufacturer's production inspection. If the manufacturer performs tests similar to those specified in
group A, subgroup 1, as the final step of his manufacturing process, the subgroup 1 test may be eliminated when
approved by the qualifying activity. The following criteria must be complied with:
a.
The manufacturer's production test are identical to, or more stringent than, those specified for subgroup 1
tests.
b.
100 percent of the product is subjected to these tests.
c.
Failure criteria are identical to, or more stringent than, the subgroup 1 tests.
d.
Lot rejection criteria are identical to, or more stringent than, the subgroup 1 tests.
e.
Once approved, future changes require approval from the qualifying activity.
4.6.3.2.3 Subgroup 2 tests. The subgroup 2 tests shall be performed on an inspection lot basis. A random sample
shall be selected in accordance with table XIV. In the event of one or more failures, the lot is rejected. The rejected
lot may be rescreened and defects removed and resubmitted to the table XIV sampling plan. If one or more defects
are found in the second sample, the lot is rejected and shall not be supplied to this specification. (NOTE: This
corrective action applies to the original quality defect found. If another defect type is found in the second sample, a
rescreen for that defect is also permitted).
TABLE XIV. Sampling plans for ppm categories.
Sample size
Sample size
Lot size
subgroup 2
ppm
1 to
13
100%
100%
14 to
125
13
100%
126 to
150
13
125
151 to
250
20
125
281 to
500
29
125
501 to
1,200
34
125
1201 to
3,200
42
125
3201 to
10,000
50
125
10001 to
35,000
60
294
35001 to
150,000
74
294
150001 to
500,000
90
345
500,001 and above
102
435
19
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