MIL-DTL-25879G
4.7.18 Humidity (see 3.4.5). The switch shall be tested in accordance with method 103 of MIL-STD-202, test
condition A. After completion of the test, visual inspection shall show no signs of visible deterioration. The dielectric
withstanding voltage and insulation resistance test values shall meet the original parameters.
4.7.19 Salt atmosphere (see 3.4.6). The switch shall be tested in accordance with method 101 of MIL-STD-202,
test condition A. After completion of the test, the dielectric withstanding voltage, insulation resistance, and switching
time shall meet the original parameters.
4.7.20 Reliability (see 3.5). Reliability testing shall be in accordance with the manufacturer's reliability assurance
program, with the following additions and exceptions:
Temperature range: The temperature range shall be -54C to +85C.
a.
On-off cycling: On-off cycling shall be one hour at -54C with no electrical operation and 3 hours at +85C
b.
with continual electrical cycling.
c.
Electrical cycling: During the operating period, the switch shall be operated at least 140 times per minute.
The contact resistance shall be measured at regular intervals for approximately 100,000 cycles of
operation.
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.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The SA-521A/A switch covered by this specification is intended for use in coupling two
antennas to an equipment.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of the specification.
b.
Packaging requirements and levels of preservation: packaging and packing required (see 5.1).
c.
PIN: The switch should normally be ordered without the mounting. If the mounting is required, it should be
ordered separately.
6.3 First article approval. Information pertaining to first article inspection and approval of products covered by this
specification should be obtained from the acquiring activity.
6.4 Substitution data. The switch covered by this specification is substitutable for the following items:
Manufacturer's
Manufacturer's
code
type or PIN
74868
300 - 10099
26512
GS839L2
82152
50010
72152
13-50-04010
72152
CS-319A, B, D
81349
SA-521A
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