304 North Cardinal St.
Dorchester Center, MA 02124

Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM

Exploring BNC Connectors: Definition, Design Parameters, and Applications

BNC connector, known for their versatility and reliability in the realm of electronic connections, play a crucial role in facilitating seamless communication and data transmission. This article delves into the definition, design parameters, and wide-ranging applications of BNC connector, shedding light on their significance across various industries and sectors.

BNC male connector
BNC male connector

What is BNC Connector

BNC connectors, short for Bayonet Neill-Concelman, are commonly used radio frequency connectors known for their quick-connect design and versatility in connecting coaxial cables in various electronic devices.

BNC female connector
BNC female connector

Design Parameters


BNC connectors adhere to standards such as IEC 60169-8 and MIL-PRF-39012.These standardization measures ensure the consistency and reliability of BNC connectors in various applications, making them an important connecting component widely used in the electronic field.


BNC connectors typically have a characteristic impedance of either 50 ohms or 75 ohms, depending on the specific signal transmission requirements of the application. The choice between 50 ohms and 75 ohms is crucial for ensuring effective signal transmission and minimizing signal loss.


BNC connectors are typically used for low-voltage signals, suitable for signal transmission in electronic devices and communication systems. While BNC connectors can withstand a rated voltage of up to 500V, they are primarily designed for transmitting lower voltage signals.

Dielectric Withstanding Voltage

The BNC connector has a dielectric withstanding voltage of 1500 VRMS, indicating its ability to withstand up to 1500 volts under specific test conditions without breakdown.

Frequency Range

Originally designed for DC to 1 GHz, BNC connectors are now available in versions that can operate at 11 and 18 GHz, expanding their frequency range to accommodate higher frequency applications.

Mating Cycles

BNC connectors typically have a mating cycle rating of around 500 to 1000 cycles, indicating the number of times the connector can be connected and disconnected before experiencing potential wear or degradation.

Temperature Range

BNC connectors generally have a temperature range of -65°C to +165°C, allowing them to operate effectively in a wide range of temperature environments without compromising performance.

Mating Style

Features a quick-connect bayonet mechanism for easy and secure connections.


BNC connectors are known for their strong shielding capabilities, which help to minimize interference and maintain signal integrity by providing good protection against electromagnetic interference (EMI) and radio frequency interference (RFI).


The interface’s outer diameter is approximately 0.570 inches (14.5 mm), with the male end measuring 0.436 inches (11.1 mm) and the female end slightly smaller. Certain suppliers offer miniature and subminiature variants of the connector.

Polarity Variation

Usually, the male connector is attached to a cable, while the female connector is mounted on a panel. A different type called a reverse-polarity BNC (RP-BNC) changes the polarity of the connection: The female contact, typically present in a jack, is placed in the plug, and the male contact, usually in a plug, is located in the jack. This configuration prevents RP-BNC connectors from being compatible with standard interfaces.

RP-BNC connector

Other Options

BNC connectors come in a diverse array of options and unique characteristics, such as non-magnetic properties, hermetic sealing, a variety of plating and housing materials, as well as flexible and semi-rigid termination styles for coaxial cables.


BNC connectors find applications in various markets, sectors, and industries, including:

  • Telecommunications
  • Broadcast and audiovisual equipment
  • Test and measurement equipment
  • Military and aerospace technology
  • Networking and data communication systems
  • Medical devices
  • Security and surveillance systems
  • Industrial automation and control systems

BNC connectors are pivotal in electronic connectivity, offering standardized design, robust parameters, and versatile applications. From telecommunications to aerospace, these connectors remain essential for efficient data transmission and signal integrity. Their enduring utility underscores their indispensable role in modern electronic systems.


See also:
SMA Connector
SMB Connector
TNC Connector
SMC Connector
SMP Connector

Share the Post:

Related Posts

Quality High-Frequency RF/Microwave Solutions

Send Your Inquiry Today