MIL-PRF-28776/7F
QUALIFICATION INSPECTION:
Qualification inspection and sample size: See table II.
TABLE II. Qualification inspection and sample size. 1/
Single submission
Group submission
M28776/7-006
37 units plus 1 unsealed unit for
37 units plus 1 unsealed unit for
level L at C = 1 2/
level L at C = 1 2/
63 units plus 1 unsealed unit for
63 units plus 1 unsealed unit for
level M at C = 1 2/
level M at C = 1 2/
Qualification inspection as
Qualification inspection as
applicable.
applicable.
M28776/7-001
2 units each PIN
M28776/7-002
Qualification inspection group l.
M28776/7-003
M28776/7-004
M28776/7-005
1/ For retention of qualification or extension of qualification to lower failure rate levels, all
life test data accumulated on MIL-PRF-28776/6, may be used in addition to MIL-PRF-
28776/7 data.
2/ The number of units required for qualification testing shall be increased as required in
group Q5, of table II, MIL-PRF-28776, if the relay manufacturer elects to test the
number of units permitting two or more failures. Prior to performance of qualification
inspection testing, the relay manufacturer shall preselect the sampling plan.
Qualification inspection testing for relays supplied with spreader pads (-007 through -012), two (2) units of
the 26.5 volt rated coil voltage (-012) shall be tested as follows:
Perform A1 tests of group A inspection. Attach spacer pad to relay. Perform A2, A3, and A4 tests of group A
inspection.
Group A inspection testing for relays supplied with spacer pads (-007 through -012) shall be tested as follows:
Perform A1 tests of group A inspection. Attach spacer pad to relay. Perform A2, A3, and A4 tests of group A
inspection.
Custodians:
Preparing activity:
Navy - EC
DLA - CC
Air Force - 11
DLA - CC
(Project 5945-1189-06)
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