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N Connectors

N Connector Specifications

N series RF connectors are 50 ohm constant impedance connectors with a consistently low VSWR across its frequency range of 0 to 11GHz. They are high quality medium size connectors standardly used with coaxial cables from .350" to .450" OD, but designs can also acccomodate .078" to .875" cables. N type connectors are threaded and gasketed for weatherproof operation. The threaded coupling incurs low noise and withstands shock and vibration. LTI N connectors are designed to conform to MIL-C-39012 specifications. Lighthorse Technologies offers a few styles of 75 ohm impedance versions of N connectors. They are not matable with the 50 ohm connectors. The N series connector is the most popular medium sized connector. Applications include test and measurement, antennae, base stations, transmitters, etc.

N Plug

N Jack

N connector specifications N connector specifications
Letter Minimum Maximum
A 16.00 -
B - 8.38
C 3.00 3.15
D 1.60 1.68
E 5.33 5.84
F 3.30 4.32
G 0.08 -
H 4.50 5.00
I 4.01 4.27
J 10.11 10.46
K 0.41 1.52
Letter Minimum Maximum
A - 15.93
B 8.53 8.74
C 8.03 8.13
D 10.72 -
E 5.33 -
F 4.75 5.26
G 1.19 1.96
H 4.37 5.13
I 9.04 9.19
J 3.00 3.15
- - -

Type-N Electrical Ratings

Impedance 50 ohm 75 ohm
Frequency Range 0-11 GHz 0-1.5 GHz
VSWR 1.3 max @ 11 GHz  
Voltage Rating (in VRMS at sea level) 1000 max  
Dielectric Withstanding Voltage (in VRMS at sea level) 2500 min  
Insertion Loss .15 dB max @ 10 GHz  
Insulation Resistance 5000 M min  
Contact Resistance Center Contact Outer Contact
1.0 m max 1.0 m max

Type-N Mechanical Ratings

Mating 5/8-24UNEF threaded coupling  
Durability 500 matings max  
Recommended Coupling Nut Torque 6 to 10 in-lbs  
Coupling Proof Torque 15 in-lbs  
Coupling Nut Retention Force 101.2 lbs max  
Contact Captivation 15.3 lbs max  
Cable Retention RG-174,188,316 20 lbs min
  RG-58,142,223,400 40 lbs min
  RG-59,62,210 40 lbs min
  RG-8,11,213,214 80 lbs min

Type-N Environmental Ratings

Temperature Range -65C to +165C  
Thermal Shock MIL-STD-202, Method 1017G, Condition B  
Vibration MIL-STD-202, Method 204, Condition B  
Corrosion MIL-STD-202, Method 101, Condition B  
Mechanical Shock MIL-STD-202, Method 213, Condition A  


    Material Plating
Connector Body   Brass per QQ-B-626 Nickel
Center Contact Male Brass per QQ-B-626 Gold
  Female Beryllium Copper per QQ-C-530 Gold
Insulator   Teflon, Delrin, Polypropylene None
Gasket   Silicone Rubber None
Crimp Ferrule   Annealed Copper per WW-T-799 Same as body