BNC Connectors

BNC ConnectorBNC connector has middle size in various RF connectors. BNC Connector is designed to have two-stud bayonet locking and BNC connector series are available for RF cables type, PCB type and adaptors. BNC Connector commonly is used for 0~4GHz (50 ohm) and 0~1GHz (75 ohm) , but offers 11 GHz max.

Wellshow Technology manufactures various BNC connectors and custom BNC RF cable assemblies in Taiwan. We can provide good quality in short time and welcome OEM or customized RF connector. Contact us by email or call us 886-2-24270488 to start business!

BNC Connector Series

All BNC Connector

BNC Plug Connector

BNC Jack Connector


The BNC coaxial connector was developed with a two-stud bayonet mechanism for rapid and reliable connection and disconnection.

BNC low-cost connectors typically utilize die-cast and molded components, while performance will not be equal to the industrial or military grade products, BNC connectors are used in broadcast, CATV and CCTV applications crimped with 75 ohm coaxial cables like RG179, BT3002, 2.5C2V, RG59 and RG6U.

BNC connector have 50 and 75 ohm impedance and offer broadband capability from 0 to 4 GHz. The 75 ohm BNC can be used successfully up to 1 GHz.

Product Range

  • Cable Connectors (straight and right angle) for flexible, semi-flex and semi-rigid cables
  • PCB connectors (straight and right angle)
  • Panel connectors in various flanges
  • Adaptors


  • Antennas
  • Cable Assembly
  • Automotive
  • Radios
  • Telecommunication
  • Satcom
  • Surge Protection
  • Base Stations
  • Medical Equipment
  • Instrumentation
  • CCTV
  • CATV



BNC Interface Dimensions

BNC Plug Connector Interface

BNC Plug Connector Interface

BNC Jack Connector Interface

BNC Jack Connector Interface



BNC Connector Technical Characteristics

Impedance50 ohm or 75 ohm
Frequency range0 ~ 4 GHz for 50 ohm
0 ~ 1 GHz for 75 ohm
VSWRStraight type ≤ 1.3 max.
R/A type ≤ 1.5 max.
Dielectric withstanding voltage1500 V rms
Working voltage0500 V rms
Center contact resistance≤ 1.5 mΩ (Milliohms max.)
Outer contact resistance≤ 2.0 mΩ (Milliohms max.)
Insulation resistance≥ 5 x 103 MΩ (Megohms min.)
Coupling2-stud bayonet
Contact Retention6 lbs min.
Mating Durability500 cycles min. (For Beryllium copper contact only)
Temperature RangeTeflon −65ºC ~ +155 ºC
Delrin −55ºC ~ +85 ºC
Coupling nut retention100 lbs. min.
VibrationMIL-STD-202 Meth. 204
Corrosion resistanceMIL-STD-202 Meth. 101
Body, coupling nutBrass, Zinc alloy(diecast)
InsulatorTeflon, Delrin
Center contactBrass for male,
Beryllium copper or Phosphor bronze for female
Crimping sleeveAnnealed Brass
Body platingNickel (Ni)
Center contact platingGold (Au)

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