The TNC connector series is a miniature, threaded weatherproof series with a constant 50 Ω impedance and a frequency range of DC - 11 GHz.

TNC connectors are produced with standard and reverse polarity. Reverse polarity is a keying system accomplished with a reverse interface, and ensures that reverse polarity interface connectors do not mate with standard interface connectors. Amphenol accomplishes this by inserting female contacts into plugs and male contacts into jacks to ensure quality. Other manufacturers may use reverse threading to accomplish reverse polarity keying.

Because of their versatility and durability, TNC connectors are used in many applications.

Related Products

TNC Adapters
TNC Accessories
TNC Cable Assemblies

Features and Benefits

  • Threaded coupling interface ensures connector with not de-couple in vibration-intense applications
  • Durable construction
  • Performance from DC - 11 GHz operations in many applications


  • Antennas
  • Industrial
  • Wireless
  • Military
  • Broadband

TNC Specifications

Impedance 50 Ohm nominal
Frequency Range 0-11 GHz
M39012 Straight Connectors  1.3 max
M39012 Right Angle Connectors 1.3 max
Dielectric Withstanding Voltage  1500 VRMS
RF Leakage -60dB min at 3 GHz
Insulation Resistance 5000 MΩ min
Contact Resistance  
Center Contact 1.5 mΩ
Outer Contact 0.2 mΩ
Braid to Body 0.1 mΩ
Insertion Loss 0.18 dB at 9 GHz
Voltage Rating 500 volts peak
Temperature Range -65⁰C to +165⁰C
Clamp Gaskets Clamps
Heat Shrink Tubing Crimps
Hermetic Seals Pass helium leak test of 2 x 10-8 cc/sec
Shock Mil-STD-202, Method 202
Vibration Mil-STD-202, Method 204 (test cond. D)
Moisture Resistance MIL-STD-202, Method 106
Corrosion  Mil-STD-202, Method 101 ( test cond. B)
Temperature Cycling Mil-STD-202, Method 102 (test cond. D)
Altitude MIL-STD-202 Method 105 (test cond. C)
Mating 7/16 threaded coupling
Cable Affixment (Braid or Jacket)  
All Crimps Hex braid crimp
Clamps Screw-thread nut and braid clamp
Cable Affixment (Center Conductor)  
Crimps Crimp or solder
All Others Solder only
Captivated Contact  
All Crimps Yes
Others Where specified
Cable Retention  
Crimps 20-100 lbs
Clamps 20-50 lbs

These characteristics are typical and may not apply to all connectors.

Interface Dimensions