MIL-PRF-27/103E
REQUIREMENTS: (When numbers in parentheses, such as (1-2) are used, they indicate the winding and
the extreme terminals of the winding.)
Electrical ratings: See table I.
Working voltage (peak): 50 volts.
Frequency range: 400 Hz to 100 kHz.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle. Continuous.
Case: Encapsulated.
Terminals: Dumet wire leads.
Material: Tin-lead plated type D-4 in accordance with MIL-STD-1276.
Diameter: .016 ±.002 inch (0.41 ±0.05 mm).
Length: 1.000 ±.025 inch (2.54 ±0.63 mm).
Weight: 0.11 ounces, maximum.
Altitude: 150,000 feet, maximum.
Operating temperature range: -55°C to +105°C.
Terminal strength: MIL-STD-202, method 211, test condition A, 2 pounds.
Dielectric withstanding voltage:
At sea level: 100 V rms.
At reduced barometric pressure: 100 V rms.
Electrical characteristics: See table II.
No load (centertap unbalanced only): ±1 percent with 5 volts, 5 kHz across primary.
Harmonic distortion: Total harmonic content of the output shall be a maximum 5 percent at the specified power level and primary
dc current (see table I).
Insertion loss: At the specified power level (see table I), the insertion loss shall be a maximum of 4 dB.
Frequency response: ±3 dB at the rated source and load impedances (see table II) with 1 mW level output and a reference
frequency of 1 kHz.
Vibration (high frequency): MIL-STD-202, method 204, test condition B.
Shock (specified pulse): MIL-STD-202, method 213, test condition H.
Marking location: See figure 1.
Part or Identification Number (PIN): M27/103-(See table I).
Supersession data: MIL-PRF-27 supersedes the following MS sheets which are inactive for new design:
MS21394(USAF), MS21404(USAF), and MS53227
Superseding PIN's: See table III.
2