View source for Phone connector (audio)

In [[electronics]], a '''phone connector''', also known as '''phone jack''', '''audio jack''' or '''jack plug''', is a common family of [[connector]] typically used for [[Analog signal|analog signals]], primarily [[Audio signal|audio]].

== Description ==

It is cylindrical in shape, typically with two, three or four contacts. Three-contact versions are known as TRS connectors, where T stands for "tip", R stands for "ring" and S stands for "sleeve". Similarly, two- and four-contact versions are called TS and TRRS connectors respectively.

The phone connector was invented for use in telephone switchboards in the 19th century and is still widely used.

== Configurations ==

Several configurations exist:

* Original (and largest): the outside diameter of the "sleeve" conductor is 1⁄4 inch (exactly 6.35 mm).
* Mini connector: has a diameter of 3.5 mm (approx. 1⁄8 inch). 
* Sub-Mini connector: has a diameter of 2.5 mm (approx. 3⁄32 inch).

== RCA (phono) connectors ==

Not to be confused with [[RCA connector|RCA connectors]], also known as ''phono connectors'', from [[phonograph]].

== See also ==

* [[Computer hardware]]
* [[Computer speaker]]
* [[RCA connector]]

== External links == 

* [https://en.wikipedia.org/wiki/Phone_connector_(audio) Phone connector (audio)] @ Wikipedia