BNC connector

The Bayonet Neill-Concelman (sometimes wrongly called the British Naval Connector) is a type of RF connector used for terminating coax cable. Some authorities expand the abbreviation as Baby Neill-Concelman - it is a lot smaller than N and C connectors.

The BNC connector is one of a larger class of "bayonet connectors", named after the resemblance to the standard twist-on attachment for a bayonet. Named after Paul Neill of Bell Labs (inventor of the N connector) and Amphenol engineer Carl Concelman (inventor of the C connector), the BNC was originally designed as a miniature form of the Type C connector.

It is commonly used on 10base2 thin Ethernet networks, both on cable interconnections and network cards.

A threaded version of the BNC connector, known as the TNC connector (for Threaded Neill-Concelman) is also available. It has superior performance to the BNC connector at microwave frequencies.

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