MIL-PRF-19500/391N
4.4.2.3 Group B sample selection. Samples selected from group B inspection shall meet all of the following
requirements:
a.
For JAN, JANTX and JANTXV samples shall be selected randomly from a minimum of three wafers (or from
each wafer in the lot) from each wafer lot. For JANS, samples shall be selected from each inspection lot.
See MIL-PRF-19500.
b.
Shall be chosen from an inspection lot that has been submitted to and passed table I, group A, subgroup 2
conformance inspection. When the final lead finish is solder or any plating prone to oxidation at high
temperature, the samples for life test (table E-VIa, subgroups B4 and B5 for JANS, and table E-VIc, group B
for JAN, JANTX and JANTXV) may be pulled prior to the application of final lead finish.
4.4.3 Group C inspection. Group C inspection shall be conducted in accordance with the tests and conditions
specified for subgroup testing in table E-VII of MILPRF19500, and in 4.4.3.1 herein (JANS). See 4.4.3.2 herein for
JAN, JANTX, and JANTXV group C testing. Electrical measurements (end-points) shall be in accordance with
table I, group A, subgroup 2.
4.4.3.1 Group C inspection, table E-VII (JANS) of MILPRF19500.
Subgroup
Method
Condition
C2
2036
Test condition E; not applicable for UB devices.
C5
3131
1,000 hours, VCB = 10 V dc, power and ambient temperature shall be applied to the device
C6
1026
to achieve TJ = +150°C minimum, and minimum power dissipation of 75 percent of max
time decreased as long as the devices are stressed for a total of 45,000 device hours
minimum, and the actual time of test is at least 340 hours.
4.4.3.2 Group C inspection, (JAN, JANTX, and JANTXV), table E-VII of MILPRF19500.
Subgroup
Method
Condition
C2
2036
Test condition E; not applicable for UB devices.
C5
3131
C6
Not applicable.
4.4.3.3 Group C sample selection. Samples for subgroups in group C shall be chosen at random from any
inspection lot containing the intended package type and lead finish procured to the same specification which is
submitted to and passes table I, group A tests herein for conformance inspection. When the final lead finish is solder
or any plating prone to oxidation at high temperature, the samples for C6 life test may be pulled prior to the
application of final lead finish. Testing of a subgroup using a single device type enclosed in the intended package
type shall be considered as complying with the requirements for that subgroup.
* 4.4.4 Group D inspection. Conformance inspection for hardness assured JANS and JANTXV types shall include
the group D tests specified in table II herein. These tests shall be performed as required in accordance with
MILPRF19500 and method 1019 of MILSTD750 for total ionizing dose, or method 1017 of MILSTD750 for
neutron fluence as applicable (see 6.2.e herein), except group D, subgroup 2 may be performed separate from other
subgroups. Alternate package options may also be substituted for the testing provided there is no adverse effect to
the fluence profile.
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