MIL-DTL-19648E
4.6.1.2.1 Sampling plan. A sample of parts shall be randomly selected in accordance with table VI, if
one or more defects are found, the lot shall be rescreened and defects removed. After screening and
removal of defects, a new sample of parts shall be randomly selected in accordance with table VI, if one
or more defects are found in the second sample, the lot shall be rejected and shall not be supplied to this
specification.
Table VI. Group A inspection.
Electrical
Visual and Mechanical
Lot size
Characteristics 1/
Examination
2 to
12
100 percent
100 percent
13 to
125
100 percent
13
126 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
500,001 and over
435
102
1/ Electrical characteristics would, in this case, include: normal operate
time, release time (when specified), recovery time (when specified),
contact resistance (or contact voltage drop), seal, dielectric
withstanding voltage, and insulation resistance.
4.7 Methods of inspection.
4.7.1 Visual and mechanical examination.
4.7.1.1 External. Relays shall be examined to verify that the external design and construction, physical
dimensions, weight, and marking are in accordance with the applicable requirements (see 3.1, 3.4, 3.5,
3.20 and 3.22.)
4.7.1.2 Internal. Relays shall be disassembled and examined to verify that the internal design and
construction are in accordance with the applicable requirements (see 3.1 and 3.4.).
4.7.2 Solderability (see 3.5). Relays shall be tested in accordance with method 208 of MIL-STD-202.
The following details shall apply:
a. Number of terminations - Two per relay.
b. Solder dip - Applicable.
c. Examination of terminations - Applicable.
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