MIL-PRF-23419H
4.7.12 Thermal shock (see 3.16). The fuses shall be subjected to thermal shock tests in accordance
with method 107 of MIL-STD-202. The following details shall apply:
a. Test condition A or B as specified (see 3.1).
b. Examination after test: Fuses shall be examined for compliance with 3.16.
(both leads on each fuse shall be tested).
of MIL-STD-202. The following details and exceptions shall apply:
a. Measurement before test: Continuity shall be measured as specified in 4.7.2.
b. Special preparation of the specimen: Gold plated leads shall have the gold removed by single or
double dipping into a flowing or nonflowing hot solder of sufficient volume to assure complete
gold removal. Both leads shall be dipped in a suitable noncorrosive flux for a period of 5
seconds ±2 seconds, after which they shall be pre-tinned by immersion into solder for 3 seconds
to 5 seconds. The solder shall be maintained at +260°C ±5°C. The leads shall be immersed to
within .150 inch ±.025 inch (3.81 mm ±0.64 mm) of the body of the fuse. The fuses shall then be
assembled onto the mount board. The mount board shall not be metal clad.
c. Test condition C, except time duration shall be 5 seconds, ± 2 seconds.
d. Cooling time: 5 minutes minimum.
e. Measurements after test: Continuity shall be measured as specified in 4.7.2.
f.
Examination after test: Fuses shall be examined for evidence of mechanical damage when
visually inspected at 7X.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor
personnel, these personnel need to contact the responsible packaging activity to ascertain packaging
requirements. Packaging requirements are maintained by the Inventory Control Point's packaging
activities within the Military Service or Defense Agency, or within the military service's system commands.
Packaging data retrieval is available from the managing Military Department's or Defense Agency's
automated packaging files, CD-ROM products, or by contacting the responsible packaging activity.
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