MIL-PRF-27/247D
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.
Frequency range: 200 Hz to 10 kHz.
Power level: 2 watts, maximum at 200 Hz.
TABLE I. Electrical ratings.
Secondary
Dash
Circuit
Primary
Primary
Secondary
Primary
unbalanced
DCR
DCR
impedance
no.
diagram
impedance
dc current
(4-6)
(1-3)
(4-6)
(1-3)
ohms ±20%
ohms ±20%
ohms
ohms
mA (max)
1.5
1,000.00
700
10.0 k CT
10.0 k CT
A
02
1.5
150.00
700
1.5 k CT
10.0 k CT
A
03
1.5
60.00
700
600.0 CT
10.0 k CT
A
04
1.5
0.37
700
3.2
10.0 k CT
B
05
4.0
60.00
105
600.0 CT
1.5 k CT
A
06
4.5
60.00
69
600.0 CT
1.0 k CT
A
07
6.0
60.00
43
600.0 CT
600.0 CT
A
08
6.0
24.00
43
250.0 CT
600.0 CT
A
09
6.0
15.00
43
150.0 CT
600.0 CT
A
10
6.0
0.37
43
3.2
600.0 CT
B
11
Design and construction:
Dimensions and configuration: See figure 1.
Duty cycle: Continuous.
Case: Encapsulated.
Material: Plastic.
Terminals: Pin (printed circuit).
Material: Brass, tin-plated.
Diameter: .045 inch ±.005.
Length: .187 inch, maximum.
Weight: .10 pound.
Altitude: 70,000 feet, maximum.
Operating temperature range: -55°C to +130°C.
Salt spray (corrosion): MIL-STD-202, method 101, test condition B.
Terminal strength: MIL-STD-202, method 211, test condition A, 2 pounds.
2
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