MIL-PRF-23419/12E
Marking: Fuses shall be marked with the PIN designation in accordance with MIL-PRF-23419,
manufacturer's name or logo, date code, and serialized label. Manufacturer's lot may be marked
optionally. Marking ink color shall be white.
Current derating limits: The recommended derating limits for fuses covered in this specification sheet
are listed on figure 4 below. This figure relates current to case temperature, regardless of vacuum
conditions.
Precap inspection: Prior to molding, all fuses shall be visually inspected at 10X magnification for the
following defects:
a.
Obvious foreign inclusions or pits greater than .005 inch (0.13 mm) diameter in the arc
suppressant glass shall be cause for rejection if they fall within the dashed line as indicated on
figure 5.
b.
Parts shall be visually free of flux or other foreign material after cleaning.
c.
Solder must make a continuous fillet between the silver termination pad and lead.
d.
Voids, or the sum of voids in the solder fillet shall not exceed .015 inch (0.38 mm) in diameter.
e.
A sample of five fuses shall be subjected to lead peel strength testing. Minimum acceptable
force as measured at lead pullout shall be 250 grams.
FIGURE 5. Current derating limits.
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