Description and Use
– BNC connector features bayonet lugs on the female connector
– Mating is achieved with a quarter turn of the coupling nut
– Outer conductor with slots and plastic dielectric on each gender connector
– Dielectric causes increasing losses at higher frequencies
– Usable up to about 11GHz, but not necessarily stable
– Originally designed for military use
– Widely accepted in video and RF applications up to 2GHz
– Used in radio, television, and other RF electronic equipment
– Commonly used in early computer networks and Ethernet variants
– Used in aerospace electronics, nuclear instrumentation, and test equipment
Origin and Types
– Named BNC after its bayonet mount locking mechanism and inventors
– Paul Neill and Carl Concelman invented the BNC connector
– Neill also invented the N connector, Concelman invented the C connector
– BNC connectors made in 50 and 75 ohm versions
– 75 ohm types sometimes recognized by reduced or absent dielectric
– 50 ohm connectors specified for use up to 4GHz, 75 ohm up to 2GHz
– Reverse-polarity BNC (RP-BNC) reverses polarity of the interface
– Mini BNC and High Density BNC have smaller footprints for higher packing density
BNC Inserter/Remover Tool
– Used to insert or remove BNC connectors in high density or hard-to-reach locations
– Made of stainless steel with plastic handle grips for torque
– Shaft length is double the length of a standard connector
– Facilitates safe and efficient connection and disconnection of BNC connectors
– Minimizes risk of accidentally disconnecting nearby connectors
High-voltage connectors
– MHV and SHV connectors are used for higher voltages (above 500V).
– MHV connectors can be mistaken for BNC type connectors and can be forced to mate with them.
– The SHV connector is a safer alternative to MHV, as it cannot mate with ordinary BNC connectors and has a harder-to-accidentally-contact inner conductor.
Miniature connectors and Related Connectors
– BNC connectors are commonly used in electronics but are being replaced by LEMO 00 miniature connectors for higher densities.
– LEMO 00 connectors allow for significantly higher densities compared to BNC connectors.
– In the video broadcast industry, the DIN 1.0/2.3 and HD-BNC connectors are used for higher density products.
– Related connectors include SMA connector, SMB connector, SMC connector, and UHF connector. Source: https://en.wikipedia.org/wiki/BNC_connector
The BNC connector (initialism of "Bayonet Neill–Concelman") is a miniature quick connect/disconnect radio frequency connector used for coaxial cable. It is designed to maintain the same characteristic impedance of the cable, with 50 ohm and 75 ohm types being made. It is usually applied for video and radio frequency connections up to about 2 GHz and up to 500 volts. The connector has a twist to lock design with two lugs in the female portion of the connector engaging a slot in the shell of the male portion. The type was introduced on military radio equipment in the 1940s and has since become widely applied in radio systems, and is a common type of video connector. Similar radio-frequency connectors differ in dimensions and attachment features, and may allow for higher voltages, higher frequencies, or three-wire connections.
 Male 50 ohm BNC connector | |||
| Type | RF coaxial connector | ||
|---|---|---|---|
| Production history | |||
| Designer | Paul Neill, Carl Concelman | ||
| Designed | 1940s | ||
| Manufacturer | Various | ||
| General specifications | |||
| Diameter | Outer, typical:
| ||
| Cable | Coaxial | ||
| Passband | Typically 0–4 GHz | ||
