MIL-PRF-27/157E
REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the winding and
the extreme terminals of the winding.)
Electrical ratings: See table I.
TABLE I. Electrical ratings. 1/
Dash
Primary
Secondary voltage
no.
voltage
(5-6)
(6-7)
(8-9)
(9-10)
(2-4):
115V, 50/60 Hz
8.25 V
12.0 V
12.0 V
8.25 V
(1-4):
115V, 50/60 Hz
7.76 V
11.28 V
11.28 V
7.76 V
01
(1-3):
115V, 50/60 Hz
8.74 V
12.72 V
12.72 V
8.74 V
(2-3):
115V, 50/60 Hz
9.24 V
13.44 V
13.44 V
9.24 V
Primary current (1-4): 0.15 ampere.
Secondary current:
(5-7): 0.4 ampere.
(8-10): 0.4 ampere.
VA: 16.
Working voltage (peak): 535 volts.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Metal encased.
Terminals: Solder terminal, Lundey #199E or equivalent.
Terminal height: .438 inch (11.13 mm) maximum.
Weight: 32.63 ounce, maximum.
Altitude: 50,000 feet, maximum.
Operating temperature range: -55°C to +130°C.
Terminal strength: MIL-STD-202, method 211, test condition A, 5 pounds and test condition E, 8.0 ounce-inch.
Shock: MIL-STD-202, method 213, test condition H.
Dielectric withstanding voltage:
At sea level: 1,500 volts rms.
At reduced barometric pressure: 670 volts rms.
2
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