MIL-PRF-87217A
4.5. Verification of qualification. Every 6 months the manufacturer shall provide verification of qualification to the
qualifying activity. Continuation of qualification shall be based on meeting the following requirements:
a. The manufacturer has not modified the design of the item.
b. The specification requirements for the item have not been amended so as to affect the character of the
item.
In the event that there is no production of a single style device during a reporting period and the manufacturer is
listed for more than one style on the QPL, the manufacturer shall certify that they retain the capabilities and facilities
necessary to produce that product. If during three consecutive reporting periods there has been no production of a
given style, the manufacturer may be required, at the discretion of the qualifying activity, to submit a representative
product of that style to testing.
4.6 Conformance inspection.
4.6.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A.
4.6.1.1 Inspection lot. An inspection lot shall consist of capacitors of the same style, voltage rating, design and
nominal capacitance rating produced in the same case size. Manufacture of all parts in the lot shall have been
started, processed, assembled and tested as a group. Lot identity shall be maintained throughout the manufacturing
cycle.
4.6.1.2 Group A inspection. Group A inspection shall consist of the tests specified in table l in the order shown,
and shall be performed on units that have passed subgroup 1, subgroup 2, and subgroup 4 tests in group A
inspection of MIL-PRF-83421. There shall be a maximum total of 5 percent defectives allowed (PDA) on the 100
percent tests of subgroups 2 and 3 for catastrophic failures. A catastrophic failure is defined as insulation resistance
(IR) less than 100 megohms, capacitance value 20 percent or greater of its nominal value, or dissipation factor (DF)
of .25 percent or greater.
4.6.1.2.1 Sampling plan. Subgroup 1, 2, 3 and 4 tests shall be performed on each capacitor offered for
inspection. Subgroup 6 test shall be performed on an inspection lot basis. Statistical sampling inspection shall be
performed on an inspection lot basis. A sample of 13 parts shall then be randomly selected. If one or more defects
are found, the lot shall be rescreened and defects removed. A new sample of 13 parts shall then randomly be
selected. If one or more defects are found in this second sample, the lot shall be rejected and shall not be supplied
to this specification.
4.7 Methods of examination and test.
4.7.1 Visual and mechanical inspection. Capacitors shall be inspected to verify that the materials, design,
construction, physical dimensions, marking, and workmanship are in accordance with the applicable requirements
(see 3.1, 3.4, 3.5, 3.15 and 3.16). A 5X to 7X magnification limit shall apply.
4.7.2 Thermal shock (see 3.6). Capacitors shall be tested in accordance with method 107 of MIL-STD-202. The
following details and exception shall apply:
a. Test condition letter B, -55 C to +100 C.
b. Measurements before and after cycling: Not applicable.
c. Number of cycles: As specified (see 3.1).
6
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business