BNC Connector Types Explained

Written by: Tektel Team

A BNC cable connector is a type of radio frequency (RF) connector used with coaxial cables. It is primarily used in radio, television, test instruments and video signals. BNC connectors are commonly designed to operate up to 3 GHz at 75 Ohm.

Not all BNC connectors are made the same. There are several different types of BNC connectors, designed with various methods of attachment. The different BNC connectors include the BNC Crimp on connector, the BNC twist on connector and the BNC compression connector.

BNC Crimp on connector is available in two styles – 2 piece and 3 piece. To attach the BNC Crimp on connector onto a coaxial cable, additional tools needed are a coax cable stripper and a coax crimping tool.

1 Steps:

Slide the crimp ferrule piece of the connector onto coaxial cable, slimmer side first.  Using a cable stripper, trim the jacket off the edge of the cable and peel it off. Fold the copper braiding over the long side of the cable. Next trim the interior insulation shielding the cable core. Slide the connector onto the cable. Fold braid back over crimp body and push crimp ferrule up over braid and crimp body. With the crimping tool, crimp ferrule to connector.

This is a very secure method and is widely used by installers.

A BNC twist on connector is convenient in that it needs no additional tools in order to be attached to the coaxial cable, except for a cable stripper. Once the cable is stripped, the rest of the work is done by hand.

2 Steps:

Strip the cable to reveal its inner core. Then Cut the plastic jacket to reveal the copper braiding, and fold the braiding over the plastic shielding. Slide the bare inner core side of the cable into the BNC twist on connector and twist it clockwise to secure it.

A BNC compression connector comes in the once piece style or the F connector style. To install the once piece BNC compression connector, you’ll need a stripper and a compression tool.

3 Steps:

Strip the jacket off the cable revealing the inner core of the cable. Next take the BNC compression connector and slid the inner core into the internal connector hole. Push the cable into the connector into place. The inner core will come out through the connector. Using a compression tool, insert the connector into place and squeeze it tight, while holding the cable in place.