MIL-PRF-55339/20A
DESIGN AND CONSTRUCTION
General configuration: See figure 1.
Impedance: 50 ohms, nom.
Working voltage: Sea level 5000 V rms.
70,000 feet (4.437 kPa) 125 V rms.
Frequency range: 0 to 4 GHz.
Temperature range: -65º to +165ºC.
PERFORMANCE (installation torque of 6 to 10 lb. (0.68 to 1.13 Nm), series N)
Dimensions: See figure 1 and MIL-STD-348.
Series N
Center contact retention:
Series BNC
Axial force (lb. min)
6 (26.7 N)
6 (26.7 N)
Torque (in. oz, min)
N/A
N/A
Force to engage and disengage:
Series BNC
Series N
Longitudinal force (lb. max)
3.0 (13.3 N)
0
Torque (in. lb, max)
2.5 (0.34 Nm)
6.0 (0.68 Nm)
Coupling proof torque: 15 in. lb (1.69 Nm), min, series N.
Mating characteristics, series BNC:
Center contact (socket):
Oversize test pin dia - .057 in. (1.45 mm), min.
Insertion depth - .125 in. (3.17 mm), min.
Number of insertions 1.
Max test pin (insertion force test), series BNC:
Steel test pin dia - .054 in. (1.37 mm), min.
Pin finish 16 microinches (0.407 µm).
Insertion force 2 lb (8.89 N), max.
Number of insertions 1.
Min test pin (withdrawal force), series BNC:
Steel test pin dia - .052 in. (1.32 mm), max.
Pin finish 16 microinches (0.407 µm).
Withdrawal force 2 oz (0.56 N), min.
Number of withdrawals 1.
Outer contact, series N:
Min test ring ID - .316 in. (8.03 mm), max.
Ring finish 16 microinches (0.407 µm).
Insertion force 25 lb (111.2 N), max.
Insertion depth - .093 in. (2.36 mm), min.
Number of insertions 1.
Slotted member contact only, series N:
Max test ring ID - .324 in. (8.23 mm), min.
Test ring finish 16 microinches (0.407 µm).
Insertion depth - .031 in. (0.79 mm), max.
Number of insertions 1.
2
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