MIL-PRF-8805/104D
REQUIREMENTS:
Dimensions and configuration: See figure 1.
Enclosure design: 4 (Resilient).
Temperature characteristic: 1 (-55° to +85°C) continuous duty plus switches shall be
subjected to 100 cycles of temperature variations. One cycle is defined as the temperature
and times, in order shown, in table I. Immediately upon completion of testing of a
temperature requirement, the switches shall be inserted into the subsequent test chamber.
At the end of the temperature condition of each cycle, the switches shall make, carry, and
break rated resistive current at rated voltage (seal level) for the number of operations shown
in table I. Test shall begin after oven temperature stabilizes. Prior to each make/carry/break
operation involving rated resistive current the switch shall carry without making or breaking
400 percent of rated resistive current for 200 milliseconds. Failures, defined as the inability
to make or break rated resistive current, shall not occur throughout these tests.
TABLE I. Temperature cycling.
Number of
Temperature
Time
switch operations
(°C)
(Minutes)
110
30
30
174
10
10
215
1
2
Shock type: Method 213, test condition B (75G), MIL-STD-202.
Vibration grade: 2 (10 Hz to 2,000 Hz).
Weight: M8805/104-001,-003: .75 pound max.
M8805/104-002,-004: .80 pound max.
Operating characteristics (±20 percent variation from specified values acceptable after test):
9 ±3 pounds.
Actuating force:
Full overtravel force:
30 pounds maximum.
Releasing force:
5 pounds minimum.
Pretravel:
.050 inch maximum.
Movement differential:
.030 inch maximum
Overtravel:
.125 inch minimum.
Coincidence of operating and
releasing points:
All circuits shall transfer within .010 inch of plunger
travel after first circuit transfers.
Strength of actuating means:
100 pounds minimum.
4
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