What Is an RCA Connector?

An RCA connector is a plug and a socket designed to be used with coaxial cables with frequencies from very low to very high megahertz.

RCA connector

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An RCA connector is a plug and a socket designed to be used with coaxial cables with frequencies from very low to very high megahertz.

An RCA connector is a plug and a socket designed to be used with coaxial cables with frequencies from very low to very high megahertz. An RCA connector is sometimes considered a phonograph plug and socket.

The male RCA plug consists of a pin with a diameter of about 2 mm in the center and a shell with an inner diameter of 6 mm. The plug housing is slotted instead of decorated with a wire pattern to facilitate quick insertion or removal of female jacks or sockets. The slot housing of the plug is kept in contact with the smooth cylindrical barrel of the socket by physical pressure. The outer shell of the plug and the coaxial cable are connected together, usually at the ground. The pin in the center of the plug is connected to the center cable conductor that transmits the signal. In the socket, the barrel is grounded, and the center hole is gold plated for signal transmission. ^[1]