MIL-PRF-27/68C
Weight: 56.70 grams maximum.
Altitude: 70,000 feet, maximum.
Operating temperature range: -55°C to +130°C.
Terminal strength: MIL-STD-202, method 211, test condition A, 2 pounds.
Dielectric withstanding voltage:
At sea level: 500 volts rms (except 1,000 volts rms on M27/68-07).
At barometric pressure: 300 volts rms (except 444 volts rms on M27/68-07).
Electrical characteristics: See table II.
Frequency response.
Reference frequency: 1 kilohertz.
Polarity: Additive, with terminals 3 and 5 connected.
TABLE II. Electrical characteristics.
Frequency response at
100 Hz to 10 kHz ± 1 dB
Dash
number
Primary
Zs
EL
ZL
dc current
(1-3)
(5-7)
(1-3)
mA
ohms
volts
ohms
10 k
10 k
12.0
01 1/
0.5
10 k
600
12.0
0.5
02
10 k
4
12.0
0.5
03
1,500
15
5.0
1.25
04
1,000
600
4.0
1.5
05
1,000
4
4.0
1.5
06
600
25 k
3.0
2.0
07
600
600
3.0
2.0
08
600
60
3.0
2.0
09
600
15
3.0
2.0
10
600
4
3.0
2.0
11
250
600
2.0
3.5
12
1/ Frequency response is 100 hertz to 8 kilohertz ± 1 dB.
Marking location: See figure 1.
Part or Identifying Number (PIN): M27/68- (dash number from table I).
4
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