MIL-PRF-27/191A
REQUIREMENTS: (When designations or colors in parentheses, i.e., (1-2) are used,
they indicate the winding and the extreme terminals of the winding.)
Electrical ratings:
Inductance (1-2): 40 microhenries to 60 microhenries.
Voltage (1-2): 0.5 volts rms, 16 kilohertz.
Current (1-2): 4.8 amperes dc.
DC resistance (1-2): .030 ohms, maximum.
Working voltage: 500 volts, maximum.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Encapsulated.
Material: Epoxy.
Weight: 27.21 grams, maximum.
Terminals: Pin type, tinned copper.
Height: .500 inch, maximum.
Diameter: .030 inch.
Operating temperature range: -55°C to +130°C.
Terminal strength: MIL-STD-202, method 211, test condition A, 2 pounds.
Shock (specified pulse): MIL-STD-202, method 213, test condition A.
Vibration, high frequency: MIL-STD-202, method 204.
Dielectric withstanding voltage (at sea level): 500 volts rms.
Electrical characteristics:
Inductance: With .5 volts rms, 16 kilohertz and 4.8 ampere dc applied to (1-2), the
inductance shall be 405 microhenries, minimum, 60 microhenries, maximum.
Temperature rise: 20°C with .5 volts rms, 16 kilohertz, 4.8 amperes dc applied to (1-2) at an
ambient temperature of +125°C, maximum..
VERIFICATION:
Qualification inspection: Not applicable for this specification sheet.
Quality conformance inspection: Groups A and B tests of MIL-PRF-27 shall be applicable.
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