MIL-T-27/261B
REQUIREMENTS: (When numbers in parentheses, such as (1-2) are used, they indicate the winding and the extreme terminals of the winding.)
Electrical ratings:
Inductance (1-3, 4): 1.35 mH, minimum. Voltage (1-3, 4): 26 volts rms, 800 Hz. Current (1-3, 4): 3.85 amperes rms.
DC Resistance (1-3, 4): 0.2 ohm, maximum. Working voltage (peak): 26 volts.
Design and construction:
Dimensions and configuration: See figure 1. Duty cycle: Continuous.
Case:
Material: Metal encased.
Terminals: (1) Solder lug (copper, tin plated), (2) solid wire leads (NEMA MW-1000, Heavy, AWG 19).
Height: Lug (.375 inch (9.53 mm) max.); Leads (1.000 inch (25.40 mm) max. length). Weight: 6 ounces, maximum.
Operating temperature range: -55°C to +170°C. Altitude: 70,000 feet, maximum.
Terminal strength: MIL-STD-202, method 211, test condition A, 5.0 pounds, for the lug and 2 pounds for the wire leads.
Dielectric withstanding voltage
At sea level: 1,000 volts rms.
At reduced barometric pressure: 300 volts rms. Electrical characteristics:
Inductance: With 26 volts, 800 Hz and 3.85 amperes applied to (1-3, 4), the inductance shall be 1.35 mH, minimum.
Temperature rise: 99°C with 26 volts rms, 800 Hz and 3.85 amperes applied to (1-3, 4) at an ambient temperature of 71°C.
VERIFICATION:
Qualification inspection: Not applicable.
Conformance inspection: Groups A and B tests of MIL-PRF-27 shall be applicable. Marking location: See figure 1.
Part or Identification Number (PIN): M27/261-01.
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