MIL-PRF-83726/20F
INPUT REQUIREMENTS:
Input voltage: 28 V dc nominal; range 18 V dc to 32 V dc.
Duty rating: Continuous.
Current drain: 5 milliamperes maximum plus load at 25C.
Polarity protection: The timer shall be inoperative during, and undamaged by, reversal of the polarity of the
operating voltage.
OUTPUT REQUIREMENTS:
Configuration: SPST; switch closure to +28 V dc.
Rating: 250 milliamperes maximum.
Suppression: Inductive suppression provided for output protection.
Voltage drop: 2 V dc maximum.
Leakage current: 1.0 microampere maximum at 28 V dc and 25C; 10 microamperes maximum at 28 V dc and
125C.
Endurance: 1,000,000 cycles minimum for test.
Qualification: 2,000 hours or 1,000,000 cycles, whichever is less.
Group B: 1,000 hours.
ELECTRICAL REQUIREMENTS:
Transients: In accordance with MIL-STD-704 and figure 2 (limit 1, duty cycle 2 percent for category B
equipment).
Spike:
Self-generated: None.
Susceptibility: +80 V maximum; -600 V maximum.
Radio noise: MIL-STD-461, class 1D.
Motor load: Not applicable.
Insulation resistance: 1,000 megohms at 500 V dc at sea level, and 100 V dc at 80,000 feet between each pin
and case.
Dielectric strength: 1,000 V rms at 60 Hz at sea level, and 350 V rms at 80,000 feet between case and pins
connected together.
ENVIRONMENTAL REQUIREMENTS:
Ambient temperature (operating or non-operating): -55C to +125C.
Vibration (sinusoidal): 10 Hz to 100 Hz at 0.06 inch DA; 100 Hz to 3,000 Hz at 30 g's.
Vibration (random): MIL-STD-202, method 214, condition I, letter J, duration of 30 minutes.
Maximum altitude rating: 80,000 feet.
Shock: 1,100 g's for 0.5 millisecond.
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