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Page Title:
Table V. Qualification inspection |
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|  MIL-C-18312F
4.5 Verification of qualification. Every 6 months, the manufacturer shall verify the retention of qualification to the
qualifying activity. In addition, the manufacturer shall immediately notify the qualifying activity whenever
group B inspection results indicate failure of the qualified product to meet the requirements of the
specification. Verification of qualification is based on meeting the following requirements:
a. The capacitor design has not been modified.
b. Lot rejection for group A inspection does not exceed the group A sampling plan.
c. Periodic group B inspection requirements have been met.
In the event that no production occurred during the reporting period, a report shall be submitted certifying that the
company still has the capabilities and facilities necessary to produce the item. If during 3 consecutive reporting
periods there has been no production, the manufacturer may be required, at the discretion of the qualifying activity,
to submit (the products, a representative product of each type, grade, class, etc.) to testing in accordance with the
qualification inspection requirements.
TABLE V. Qualification inspection.
Number of
sample units to
Number of
Examination or test
Requirement
Method
be inspected
failures 1/
paragraph
paragraph
Flashpoint of impregnant
3.20
4.7.17
1
0
Group I
Visual and mechanical examination
3.3, 3.4
4.7.1
2
Workmanship (external)
3.23
4.7.1
Marking 2/
3.21
4.7.1
Seal
3.5
4.7.2
0
Dielectric withstanding voltage
3.6
4.7.3
48
Capacitance 3/
3.7
4.7.4
Dissipation factor 3/
3.8
4.7.5
Insulation resistance 3/
3.9
4.7.6
Barometric pressure (reduced) 3/
3.10
4.7.7
Group II
12
Vibration
3.11
4.7.8
1
Salt spray (corrosion)
3.12
4.7.9
Thermal shock and immersion
3.13
4.7.10
1
Group III
12
Solderability (axial wire leads only)
3.14
4.7.11
1
Shock, specified pulse
3.15
4.7.12
Moisture resistance
3.16
4.7.13
Group IV
Terminal strength
3.17
4.7.14
24
1
Low temperature and capacitance
change with temperature 3/
3.18
4.7.15
Life
3.19
4.7.16.1
1/
A sample unit having one or more defects will be considered as one failure.
2/
Marking defects are based on visual examination only and shall be charged only for illegible, incomplete,
or incorrect marking. Any subsequent electrical defects shall not be used as a basis for determining marking
defects.
3/
Nondestructive tests.
9
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