Also known as Twin BNC, Twinax connectors are used with 78 Ohm and 95 Ohm conductor cables and operate from 0-200 MHz. Due to the improved shielding characteristic (>30dB), these connectors are used in balanced low level and high sensitivity circuits.

Twinax connectors feature keyway polarization to ensure system integrity and prevent signals from being mixed, making them ideal for computer network applications.

Related Products

TWINAX Adapters


Features and Benefits

  • Polarized key and keyway construction guarantees correct dual contact mate
  • Large threaded connectors designed for rugged use
  • Crimp contacts ensure lower cost of installation
  • Clamp assembly allows quick assembly without requiring special tools
  • 2 Stud bayonet design allows quick and easy coupling


  • Broadband
  • Military
  • Instrumentation

TWINAX Specifications

Impedance Used with 78 ohm and 95 ohm twin conductor cables
Frequency Range Keyway polarization: 0-200 MHz, 0-500 MHz with caution
Voltage Rating Keyway polarization: 500 volts peak
Temperature Range  
Copolymer of Styrene -55⁰C to +85⁰C
Noryl -45⁰C to +121⁰C
Weatherproof All twinax contact connectors are weatherproof when mated
Mating Keyway polarization: 3/4-20 threaded coupling keyed 90⁰
Cable Affixment Braid clamp, "V" groove gasket and clamp nut mechanism
These characteristics are typical and may not apply to all connectors.

Interface Dimensions