MIL-PRF-83531C
c. Index mark identification (next to pin 1, input) (see 3.1).
d. Manufacturer's CAGE code or logo.
e. Date code.
3.23 PIN level substitution (see 1.2.1). Delay lines that have been subjected to the 100 percent screen
tests ("M" PIN level) are substitutable, with acquiring agency approval, for delay lines that have not been
subjected to the 100 percent screening tests ("C" PIN level). All other performance characteristics (delay
time, rise time, voltage attenuation, distortion, delay time variation with temperature, dc resistance,
nominal characteristic impedance, and insulation resistance) must be the same. Unless specified in the
contract or purchase order (see 6.2), delay lines shall not be remarked.
3.24 Recycled, recovered, or environmentally preferable materials. Recycled, recovered or
environmentally preferable materials should be used to the maximum extent possible provided that the
material meets or exceeds the operational and maintenance requirements, and promotes economically
advantageous life cycle costs.
3.25 Workmanship. Delay lines shall be processed in such a manner as to be uniform in quality and
shall be free from defects that would affect life and serviceability. Parts shall be free of flash pits, voids,
and excessive mold marks. A visible parting line is acceptable.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as
follows:
a. Qualification inspection (see 4.4).
Conformance inspection (see 4.5).
b.
4.2 QPL system. The manufacturer shall establish and maintain a QPL system as described in 3.3.
Evidence of such compliance shall be verified.
4.3 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in
accordance with the test conditions specified in the "GENERAL REQUIREMENTS" of MIL-STD-202.
4.4 Qualification inspection.
4.4.1 Acceptable laboratory. Qualification inspection shall be performed at a laboratory acceptable to
the Government (see 6.4) on sample passive delay lines produced with equipment and procedures
normally used in production.
4.4.2 Screening: Qualification of the "C" screening level PIN is predicated upon qualification of the "M"
screening level PIN. Upon request of the manufacturer, qualification to the "C" screening level PIN's will
be granted for the envelope of products successfully qualified to the "M" screening level PIN's. The
products involved must be of the same design, manufactured using the same facilities, processes, and
materials as the product originally submitted for and qualified under the "M" screening level.
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