The banana plug is a cylindrical pin that has “metal-leaves” that bulge outward to produce a strong connectivity contact (snug fit) in a socket to prevent the pin from disconnecting or falling out. A banana plug is considered a male connector and is called a banana because of its unique contact tip. Popular testing equipment and test accessories such as leads and cables use a banana connection. The banana plugs directly into a banana socket (often referred to as a banana jack).
Banana connectors come in two forms, a banana plug or a banana socket. Banana plugs are spring-loaded, single-wire (conductor) electrical test connectors used for joining wire to electrical equipment or electrical circuit boards.
