About the TNC Interface

The TNC interface (threaded Neill-Concelman) is a “threaded” version of the “bayonet coupled” BNC interface. The threaded TNC coupling provides greater mated stability at the reference plane and greater broadband frequency response through 15 GHz. The TNC interface is commonly used in mil/aero and test & measurement applications where it provides a balance of rugged line size, frequency performance and medium power handling capabilities. The TNC interface is often keyed or polarized in specialized applications


TNCtechnical diagram

click to enlarge



Nominal Impedence50 ohms ohms
Frequency RangeDC to 15 GHz
Voltage Rating500 volts rms
Dielectric Withstanding
1500 volts rms


Mating Characteristicsper MIL-STD-348
Connector Durability500 cycles min.
Recommended Torque23 in-lbs nominal


BodyBrass, Silver or Nickel Plated. Stainless Steel, Passivate
Contacts (Inner)Female: Beryllium Copper, Silver or Gold Plated. Male: Brass, Silver or Gold Plated
Contacts (Outer)Brass, Silver or Nickel Plated
Contacts (Slotted)Beryllium Copper, Silver or Nickel Plated
Gaskets & SealsSilicone Rubber


Tempurature Range-85°F to +329°F (-65°C to +165°C)
VibrationMIL-STD-202 Method 204
ShockMethod 213
Moisture ResistanceMIL-STD-202 Method 106
Corrosion (salt spray)MIL-STD-202 Method 101

Download as Printable PDF

TNC Performance Charts