page_title: Banana connector
section_title: Miniature banana connectors
hierarchical_section_title: Banana connector / Miniature banana connectors
caption_attribution_description: English: Banana Jack Connector - Male - Female Pair 2mm
context_page_description: A banana connector is a single-wire electrical connector used for joining wires to equipment. The term 4 mm connector is also used, especially in Europe, although not all banana connectors will mate with 4 mm parts, and 2 mm banana connectors exist. Various styles of banana plug contacts exist, all based on the concept of spring metal applying outward force into the unsprung cylindrical jack to produce a snug fit with good electrical conductivity. Common types include: a solid pin split lengthwise and splayed slightly, a tip of four leaf springs, a cylinder with a single leaf spring on one side, a bundle of stiff wire, a central pin surrounded by a multiple-slit cylinder with a central bulge, or simple sheet spring metal rolled into a nearly complete cylinder. The plugs are frequently used to terminate patch cords for electronic test equipment, while sheathed banana plugs are common on multimeter probe leads.
context_section_description: Various miniature versions of the banana connector have been introduced. One type is 2.6 mm in diameter and about one third the length of the standard connector, and is commonly used in model railway applications. These are substantially more fragile than the larger connectors. Multiple miniature banana connectors are usually spaced on ​¹⁄₂-inch centers. Another miniature type is the 2 mm banana connector, which is otherwise identical to the 4 mm version, including the various plug contact styles and availability of sheathed versions for high voltage applications.
caption: Banana jack connector: male–female pair 2 mm
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