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RF TNC Connector

RF TNC connectors are threaded, vibration-resistant coaxial interfaces available in 50 Ω and 75 Ω. They deliver stable performance from DC to 11 GHz standard, extending to 18 GHz.

Coupling Mechanism7/16"-28 Threaded
Mating Cycles (Min)500
Impedance50 / 75 Ω
Frequency Max18 GHz
  • Vibration-resistant threaded coupling
  • 1.3 Max VSWR up to 11 GHz
  • Standard & Reverse Polarity
  • IP67 sealed outdoor versions
Fast Production OEM Direct100% VNA tested 100% VNA Tested
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Target Applications & Industries

Wireless infrastructure base stations
Test and measurement equipment
IoT and Wi-Fi antennas
Industrial control systems
Broadband and broadcast systems

TNC coax connectors technical overview

RF TNC connectors utilize a 7/16"-28 threaded coupling mechanism to prevent physical disconnects under high vibration and mechanical stress. Securing this interface requires a mating torque of 4 to 6 in-lbs (0.51 - 0.67 N-m). This stable connection satisfies MIL-STD-202 (Method 213, Condition G), ensuring zero electrical discontinuity during mechanical shock. Additionally, the interface dimensions strictly comply with the MIL-STD-348 specification.

To optimize conductivity, TNC RF connectors feature gold or silver-plated contacts. This maintains a maximum center contact resistance of 1.5 mΩ and an outer resistance of 0.2 mΩ. The robust assembly supports power handling up to 316 W at 1 GHz (25 °C). Furthermore, standard straight designs exhibit a maximum insertion loss of just 0.18 dB at 9 GHz.

RF TNC connector specifications

Access the complete technical parameters of the TNC connector series across the four tables below.

TNC coax connector electrical specifications

Parameter

Specification

Impedance

50 Ohm / 75 Ohm

Frequency Range

DC - 11 GHz (Standard) / DC - 18 GHz (Extended)

Voltage Rating

500 Volts Peak

Dielectric Withstanding Voltage

1500 VRMS Max

VSWR (Return Loss)

1.3 (-18 dB) Max (DC - 11 GHz)

Insulation Resistance

5000 MΩ Min

Center Contact Resistance

1.5 mΩ Max

Outer Contact Resistance

0.2 mΩ Max

RF Leakage

-60 dB Max @ 3 GHz

Insertion Loss (Straight)

0.18 dB Max @ 9 GHz

Insertion Loss (Right Angle)

0.21 dB Max @ 9 GHz

Power Handling

316 W @ 1 GHz @ 25 °C

TNC RF connector mechanical specifications

Parameter

Specification

Coupling Mechanism

7/16"-28 Threaded

Mating Cycles

500 Min

Interface Specification

MIL-STD-348

Mating Torque

4 - 6 inch-pounds (0.51 - 0.67 N-m)

Polarity Formats

Standard / Reverse Polarity

Mounting Styles

Bulkhead / Panel Mount

Cable Terminations

Crimp / Clamp

Supported Coaxial Cables

RG-58, RG-142, RG-316

TNC coaxial connector material specifications

Parameter

Specification

Contact Plating

Gold / Silver

Body Material

Brass / Zinc Diecast

Body Plating

Nickel / Silver / Tin / Gold / White Bronze

Insulator Material

PTFE / Delrin / Nylon / Polypropylene

Coax TNC connector environmental specs & compliance

Parameter

Specification

Temperature Range

-65 °C to +165 °C

Thermal Shock

MIL-STD-202, Method 107 (Condition B)

Corrosion

MIL-STD-202, Method 101 (Condition B) - 5% Salt

Vibration

MIL-STD-202, Method 204 (Condition B)

Mechanical Shock

MIL-STD-202, Method 213 (Condition G)

Moisture Resistance

MIL-STD-202, Method 106

Altitude

MIL-STD-202, Method 105 (Condition C)

Environmental Sealing

IP67 sealed versions available

RF TNC Connector FAQs

What is the maximum operational frequency and return loss for standard TNC coax connectors? ↓
Standard TNC configurations operate from DC to 11 GHz. They maintain a maximum VSWR of 1.3 (-18 dB). Extended range designs operate up to 18 GHz.
What specific mating torque is required to ensure vibration resistance? ↓
Operators must torque the coupling mechanism to 4 - 6 inch-pounds (0.51 - 0.67 N-m). This prevents signal discontinuity during mechanical shock events.
Are TNC RF connectors validated for outdoor installations? ↓
Yes. IP67 sealed versions are available to prevent moisture ingress. Standard units undergo MIL-STD-202, Method 101, Condition B corrosion testing (5% salt solution).
How does connector orientation impact insertion loss, and what is the expected RF leakage? ↓
Straight M39012 TNC configurations exhibit a maximum insertion loss of 0.18 dB at 9 GHz. Right-angle versions increase this metric to 0.21 dB at 9 GHz. The interface limits RF leakage to -60 dB maximum at 3 GHz.
What are the absolute maximum power handling and voltage limitations for this series? ↓
Standard RF TNC connectors support power handling up to 316 W at 1 GHz (at 25 °C). The operational voltage rating is 500 Volts Peak, with a Dielectric Withstanding Voltage of 1500 VRMS maximum.