MIL-PRF-83531C
maximum.
4.5.2 Group A inspection
4.5.2.1 "C" screening level PIN. The manufacturer shall establish and maintain an inspection system
to verify that delay lines meet the electrical, visual, mechanical, and solderability requirements. In-line or
process controls may be part of such a system. The inspection system shall include criteria for lot
rejection and corrective action. The inspection system shall be verified under the overall QPL system
(see 3.3). NOTE: Since the "C" level delay line is the same design as the "M" level without the
mandatory conformance inspection system, this product is still expected to meet the environmental
qualification type requirements (moisture resistance, shock, or vibration) (see 4.5.3.4).
4.5.2.2 "M" screening level PIN. Group A inspection shall consist of the inspections specified in
table II, in the order shown.
TABLE II. Group A inspection.
Inspection
Requirement
Test method
paragraph
paragraph
A-I
4.6.4
Thermal shock (15 cycles)
3.6
4.6.5
Seal 1/
3.7
4.6.6.1.1
Delay time(all taps and output)
3.8.1
4.6.6.1.2
Rise time (output only)
3.8.2
4.6.6.1.8
Insulation resistance
3.8.8
A-II
4.6.2
Dimensions
3.5.1
4.6.3
Visual inspection
3.5.2
4.6.6.1.6
DC resistance
3.8.6
4.6.6.1.3
Voltage attenuation (output only)
3.8.3
4.6.6.1.4
Distortion (output only)
3.8.4
4.6.6.1.7
Nominal characteristic impedance (at input)
3.8.7
Delay time variation with temperature
4.6.6.1.5
(output only)
3.8.5
A-III
4.6.8
Solderability 2/
3.10
1/ This seal test can be eliminated for plastic injection molded cases if the manufacturer has
demonstrated process control under the SPC program (see 3.3.1), or other method that has
been approved by the qualifying activity. If the design, material, technology, or processing of
the part is changed or, if there are any quality problems, or failures, the qualifying activity
may require resumption of the specified testing. Deletion of testing does not relieve the
manufacturer from meeting the test requirement in case of dispute.
2/ This solderability test can be eliminated if the manufacturer has demonstrated process
control under the SPC program (see 3.3.1), or other method that has been approved by the
qualifying activity. If the design, material, technology, or processing of the part is changed
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