MIL-PRF-26H
TABLE III. Group A inspection.
Requirement
Method
Number of
Test
Paragraph
paragraph
Samples
Subgroup 1
DC resistance
Subgroup 2
Visual and Mechanical inspection
Subgroup 3 1/
Solderability
1/
The manufacturer may request the deletion of the subgroup 3 solderability test, provided
an in-line or process control system for assessing and assuring the solderability of
terminations can be validated and approved by the qualifying activity. Deletion of the test
does not relieve the manufacturer from meeting this test requirement in case of dispute.
If the design, material, construction, or processing of the part is changed or if there are
any quality problems, the qualifying activity may require resumption of the test.
TABLE IV. Group A sampling plan.
Subgroup 1
Subgroup 2
Lot Size
sample size
sample size
2
to
13
100%
100%
14
to
125
100%
13
123
to
150
125
13
151
to
280
125
20
281
to
500
125
29
501
to
1,200
125
34
1,201
to
3,200
125
42
3,201
to
10,000
192
50
10,001
to
35,000
294
60
35,001
to
150,000
294
74
150,001
to
500,000
345
90
500,000
and over
435
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TABLE V. Group B inspection. 1/
Requirement
Method
Test
paragraph
paragraph
Thermal shock
Short-time overload
1/
If the manufacturer can demonstrate that these tests
have been performed five consecutive times with zero
failures, the frequency of these tests, with the 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 failures, the qualifying activity may require
resumption of the original test frequency.
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