MIL-PRF-19500/585K
3.4.1 Lead finish. Unless otherwise specified, lead or end cap finish shall be solderable in accordance with
MIL-PRF-19500, MIL-STD-750, and herein. When solder alloy is used for finish the maximum lead temperature is
limited to +175C maximum. Where a choice of finish is desired, it shall be specified in the acquisition document (see
6.2).
3.4.2 Diode construction. These devices shall be constructed utilizing non-cavity double plug construction with
high temperature metallurgical bonding between both sides of the silicon die and terminal pins (see
MIL-PRF-19500). Metallurgical bond shall be in accordance with the requirements of category I in MIL-PRF-19500.
U and US version devices shall be structurally identical to the non-surface mount devices except for lead
terminations. The US version shall be structurally identical to the U version.
3.5 Electrical performance characteristics. Unless otherwise specified herein, the electrical performance
characteristics are as specified in 1.3, 1.4, and table I herein.
3.6 Electrical test requirements. The electrical test requirements shall be the subgroups specified in table I herein.
3.7 Marking. Devices shall be marked as specified in MIL-PRF-19500.
3.7.1 Marking for U and US devices. For U and US version devices only, all marking may be omitted from the
device except for the cathode marking. All marking which is omitted from the body of the device shall appear on the
label of the initial container.
3.8 Polarity. The polarity of all types shall be indicated with a contrasting color band to denote the cathode end.
Alternatively, for U suffix devices, a minimum of three contrasting color dots spaced around the periphery on the
cathode end of the device may be used.
* 3.9 Workmanship. Semiconductor devices, Diode, Silicon, Ultra-Fast Recovery, Power Rectifier shall be
processed in such a manner as to be uniform in quality and shall be free from other defects that will affect life,
serviceability, or appearance.
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 and table I).
4.2 Qualification inspection. Qualification inspection shall be in accordance with MIL-PRF-19500 and as specified
herein.
4.2.1 Group E qualification. Group E qualification shall be performed herein for qualification or requalification only.
In case qualification was awarded to a prior revision of the specification sheet that did not request the performance of
table II tests, the tests specified in table II herein shall be performed by the first inspection lot to this revision to
maintain qualification.
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