MIL-PRF-27/172E
REQUIREMENTS: (When colors is parentheses, i.e. (Brn-Blu), are used, they indicate the winding and the
extreme terminals of the winding. When the extreme terminals of two windings are used, i.e. (Grn-Yel), the
windings are connected in series.)
Electrical ratings: See table I.
Working voltage (peak): 50 V.
Frequency range: 300 Hz to 100 kHz.
Design and construction:
Dimensions and configurations: See figure 1.
Duty cycle: Continuous.
Terminals: Solid wire, insulated. Insulation shall not be polyvinyl chloride.
Composition: D in accordance with MIL-STD-1276.
Diameter: 0.016 inch.
Length: 1.50 inches ±0.25.
Final finish: Tinned.
Weight: 4.50 grams, maximum.
Altitude: 150,000 feet, maximum.
Operating temperature range: -55C to +105C
Terminal strength: MIL-STD-202, method 211, test condition A, 2.0 pounds.
Vibration (high frequency): MIL-STD-202, method 204, test condition B.
Dielectric withstanding voltage:
At sea level: 100 V rms.
At barometric pressure: 100 V rms.
Electrical characteristics: See table II.
No load (center tap unbalance): ±1 percent at 1 V, 5 kHz across the primary.
Harmonic distortion: Total harmonic content of the output shall be a maximum of 5 percent at the specified
power level and primary dc current (see table I) at 1 kHz to 100 kHz.
Insertion loss: At the specified power level (see table I), the insertion loss shall be a maximum of 3.0 dB at
1 kHz.
Frequency response: ±3 dB at the rated source and load impedances (see table II) with 1.0 mW level output
and a reference frequency of 1 kHz.
2
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