MIL-PRF-19500P
APPENDIX E
d.
Group A variables data on a sample plan of each structurally identical device type except for series of devices
which shall be the sample plan of the highest and the lowest voltage types, or as the qualifying activity
requires, or as specified in specification sheets covering groups of devices. Test samples of selected devices
in a group or portion of a group shall be from the same inspection lot.
e.
Results and variables data for each structurally identical device on all groups B and C electrical tests not
specified in group A, including tests at temperature extremes.
f.
All results and variables data on groups B and C tests as follows:
(1)
Data on any tests not required by the qualified device.
(2)
Data that is the result of tests performed at stress levels greater than those required for the qualified
device.
(3)
Data for any tests requiring more exacting limits than those found for the qualified device.
g.
Items E.4.2.2.d through E.4.2.2.f shall not be required if the qualifying activity can be assured that the
previously fully qualified device at least meets all of the conditions and requirements for the proposed
structurally identical device type, except for device type marking.
Qualification by extension does not necessarily imply conformance inspection coverage to all device types covered
by the qualification by extension approval.
E.4.3 End-points. End-point electrical measurements shall be measured and recorded as applicable (e.g., if
delta's are required) starting and after completion of all specified tests in the subgroups of groups B, C, D and E.
Pre-test electrical failures shall be replaced by acceptable devices. An engineering evaluation shall be performed
and corrective action taken when necessary on all screened devices which fail pre-test. Resubmission of the lot to
the failed parameter shall be initiated whenever operator error or mishandling is not found to be the cause for failure.
E.4.4 Selection of samples. All samples shall be randomly selected from the qualification inspection lot. Sample
selection for group D testing shall be in accordance with table E-VIII and shall be from each wafer or from each
inspection lot, as appropriate.
E.4.5 Identification of samples. The manufacturer's management representative may, at their option, mark or
authorize the marking of each sample to be subjected to qualification testing in order to distinguish these devices
from those not intended for qualification inspection.
E.4.6 Qualification inspection lot release. The inspection lot from which the qualification samples are selected may
be offered for delivery under contract after qualification approval has been granted provided screening and
conformance inspection requirements are satisfied.
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