MIL-PRF-22684F
TABLE II. Qualification inspection.
Number of
sample units
Number of
Requirement
Test method
paragraph
paragraph
to be
failures
Inspection
allowed 1/
inspected
Group I
Visual and mechanical examination 2/ 3/
3.1, 3.3 to 3.4.1
incl. and 3.22 to
40
1
3.24 incl
DC resistance 3/
Group II
Thermal shock
Low-temperature operation
10
1
Short-time overload
Terminal strength
Group III
Dielectric withstanding voltage 3/
Insulation resistance 3/
10
1
2
Thermal shock 3/
Resistance to soldering heat
Moisture resistance
Group IV
Resistance-temperature characteristic
10
1
Life
Group V
Shock (specified pulse)
10
1
Vibration, high frequency
Group VI
Solderability
Resistance to solvents
10
1
(applicable to alpha-numeric marking)
1/
Failure of an individual resistor in one or more test in groups I to V inclusive, shall be charged as a single
failure. Failures for each resistance value shall be permitted as specified in each group, but not more than
two failures shall be permitted in groups I through V combined.
2/
Marking shall be considered defective only if the marking is illegible.
3/
Nondestructive.
8
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