MIL-PRF-24236/15J
TABLE I. Operating temperature.
Dash
Temperature
Dash
Temperature
number
setting
number
setting
Tolerance
Tolerance
F
F
F
F
20
20
135
535
135
535
20
20
180
180
550
550
20
20
215
215
600
600
20
20
240
240
650
650
20
20
250
250
675
675
20
20
300
300
700
700
20
20
325
325
725
725
20
20
400
400
750
750
20
25
425
425
825
825
20
25
450
450
900
900
20
500
500
20
525
525
Test tolerances: The allowable post test set point tolerance, should be referenced to the actual pretest set point.
Electrical ratings: 3 amperes (lamp) at 28 V dc.
Environmental test effect: Not applicable.
Weight: 6 ounces maximum, including terminal hardware.
Visual and mechanical examination: X-ray is applicable.
Solderability: Not applicable.
Method for quality conformance inspection: Go-no-go test procedure (type II). The switch shall be inserted
into a standard high temperature test block, and the switch terminals connected to a relay coil. The relay
contacts shall control the power to the test block heater and operate a lamp to indicate when the switch
contacts transfer. The switch shall be allowed to cycle "on and off", a minimum of ten cycles. The operating
temperature of the switch will be determined by observing the temperature at the time of contact closure as
indicated by the lamp. The operating temperature of the switch shall be within the tolerances listed in table I.
Sensitivity response: Applicable.
Temperature anticipation: Applicable.
Watertight seal: Applicable to switch contact chamber with the following exceptions: The switch contact chamber
shall be immersed up to but not to include the mounting flange. A vacuum shall be drawn to an absolute pressure
of 0 inch to 6 inch of Mercury. This pressure shall be maintained for a minimum of 1 minute. Any evidence of
continuous stream of bubbles from within the contact chamber shall be cause for failure.
Dielectric withstanding voltage: Test voltage 500 V rms, current flow not to exceed 100 microamperes.
Insulation resistance: Not less than 2 megohms.
Contact resistance: Not applicable.
Thermal shock: Method 107 of MIL-STD-202, test condition E, except low temperature shall be -65F and following
the test shall be within ±25F of the pretest temperature setting.
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