MIL-PRF-19500/404C
3. REQUIREMENTS
3.1 Associated specification. The individual item requirements shall be in accordance with MIL-PRF-19500 and as specified herein.
3.2 Abbreviations, symbols, and definitions. Abbreviations, symbols, and definitions used herein shall be as specified in MIL-PRF-
19500.
3.3 Interface requirements and physical dimensions. The Interface requirements and physical dimensions shall be as specified in
MIL-PRF-19500 and herein.
3.3.1 External construction. Metal surfaces shall be nickel plated in accordance with QQ-N-290 (class 2; type I (DS), type V (FC), or
type VIII (FZ)) or MIL-C-26074 (class 3, grade A). Plastic surfaces shall be finished smooth, free of pits, cracks, and other
imperfections.
3.3.2 Internal construction. The rectifier module shall contain an assembly of series-connected discrete controlled avalanche diodes
(arbitrarily designated D-1, D-2, and D-3 in the tables). Each diode shall be in a glass-to-metal, ceramic-to-metal, or fused metal oxide-to-
metal hermetically sealed non-cavity package. The completed assembly of diodes and other internal structures shall be encapsulated in a
plastic material which polymerizes to a rigid condition by virtue of a chemical cross-linking mechanism. The rectifier module shall be free
of voids either visible or as evidenced by failure to pass the environmental corona test specified. The rectifier module shall not internally
include or utilize component capacitors and/or resistors for compensation. Only those discrete diodes which have passed the tests in 4.3
tables I and II shall be used in the rectifier module. Discrete diodes shall be manufactured and tested by the rectifier module
manufacturer.
3.4 Marking. Marking shall be in accordance with MIL-PRF-19500. As an option to the polarity marking requirements, the words
"cathode terminal" may be used.
3.5 Electrical performance characteristics. Unless otherwise specified herein, the electrical performance characteristics are as
specified in 1.3, 1.4, and table I.
3.6 Electrical test requirements. The electrical test requirements shall be the subgroups specified in table I
3.7 Qualification. Devices furnished under this specification shall be products that are authorized by the qualifying activity for listing
on the applicable qualified manufacturers list before contract award (see 4.2 and 6.4).
4. VERIFICATION
4.1 Classification of Inspections. The inspection requirements specified herein are classified as follows:
a. Qualification inspection (see 4.2).
b. Screening (see 4.3)
c. Conformance inspection (see 4.4).
4.2 Qualification inspection. Qualification inspection shall be in accordance with MIL-PRF-19500 and table IV herein.
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