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| MIL-T-27/303B
REQUIREMENTS: (When designations in parentheses, i.e., (1-2) are used, they indicate the winding and the
extreme terminals of the winding.)
Electrical ratings:
Inductance (1-2): 0.60 millihenry, minimum.
Voltage (1-2): 1.0 volts rms, 1 kilohertz.
Current (1-2): 2.5 amperes dc.
Working voltage (1-2): 1.414 volts, maximum.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Encapsulated.
Material: Epoxy.
Terminals: Solder type, brass, tin plated.
Terminal length: .391 inch, maximum.
Weight: 85.05 grams, maximum.
Operating temperature range: -55C to +130C.
Terminal strength: MIL-STD-202, method 211, test condition A, 2.0 pounds.
Dielectric withstanding voltage (at sea level): 100 volts rms.
Electrical characteristics:
Inductance: With 1.0 volt rms, 1 kilohertz, and 2.5 amperes dc applied to (1-2); the inductance shall be 0.60
millihenry, minimum.
DC resistance (1-2): 0.2 ohm, maximum.
Temperature rise: 50C with 1.0 volt rms, 1 kilohertz, 2.5 amperes dc applied to (1-2) at an ambient temperature
of 80C, maximum.
Vibration (high frequency): MIL-STD-202, method 204, test condition A.
Shock (specified pulse): MIL-STD-202, method 213, test condition H.
Quality assurance provisions:
Qualification inspection: Not applicable.
Quality conformance inspection: Groups A and B tests of MIL-PRF-27 shall be applicable.
Marking location: See figure 1.
Part or Identifying Number (PIN): M27/303-01.
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