MIL-PRF-27/240C
REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the winding and
terminals of the windings.)
Electrical ratings: See table I.
TABLE I. Electrical characteristics. 1/
3/
DC
2/
Inductance
DC current
Dash
Resistance
Quality
Temperature
Working
Voltage
mH (1-2)
mA (1-2)
number
ohms (max)
Factor
Stability
voltage
(1-2)
±2%
max
(1-2)
(Minimum)
(-55°C to +105°C)
(peak)
volts
40 at
0.1 volt
01
3.0
50
4.8
50 kHz
±2%
175
at 1 kHz
40 at
0.1 volt
02
5.0
40
8.0
50 kHz
±2%
175
at 1 kHz
40 at
0.1 volt
03
8.0
30
13.0
50 kHz
±2%
175
at 1 kHz
40 at
0.1 volt
04
12.5
25
19.0
50 kHz
±2%
175
at 1 kHz
45 at
0.1 volt
05
20.0
20
31.0
25 kHz
±2%
175
at 1 kHz
45 at
0.1 volt
06
30.0
16
47.0
25 kHz
±2%
175
at 1 kHz
45 at
0.1 volt
07
60.0
11
94.0
25 kHz
±2%
175
at 1 kHz
40 at
0.1 volt
08
120.0
8
186.0
25 kHz
±2%
175
at 1 kHz
1/ Qualification testing and approval to M27/240-08 shall be sufficient to grant qualification approval
to M27/240-01 through M27/240-07.
2/ The inductance is measured with 0 Adc applied to (1-2) and at the specified voltage across (1-2).
3/ The amount of DC current that will reduce the inductance a maximum of 7%.
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Diallyl phthalate.
Terminals: 0.025 tin-lead plated type D4 in accordance with MIL-STD-1276.
Weight: 0.08 ounce, maximum.
Altitude: 75,000 feet, maximum.
Operating temperature range: -55C to +105C.
Terminal strength: MIL-STD-202, method 211, test condition A, 2 pounds.
Dielectric withstanding voltage
At sea level: 500 volts rms.
At reduced barometric pressure: 300 volts rms.
2
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