Phono Plugs

Phono plugs come in 3 diameters 6.3mm (l/4"), 3.5mm (1/8") and 2.5mm (1/16"). Each of the three diameters is available in mono (2-pole) and stereo (3-pole) versions. The mono version can be distinguished from the stereo by the number of insulating rings on the shaft. The stereo version has 2 insulating rings which divide the shaft into 3 poles known as the TIP, RING & SLEEVE. The mono version has one insulating ring which divides the shaft into 2 poles which are known as the TIP & RING. A mono plug in a stereo jack may damage the host device because one side of the jack is shorted on the mono shaft. A stereo plug in a mono jack will not usually cause damage, but will not function properly since only one side is connected. The Phono lug was originally known as a Phone Plug as it was developed and used by Bell Labs for telephone patch cables.

Mono Phono Plug
Model	A (OD)	B (L)
2.5mm	2.5	10-12
3.5mm	3.5	10-15
6.3mm	6.3	30-32

Stereo Phono Plug
Model	A (OD)	B (L)
2.5mm	2.5	10-15
3.5mm	3.5	10-15
6.3mm	6.3	30-32

Output Plug Types

These datasheets provide an overview of different types of plugs used for low voltage power supply connections and/or audio/video applications and/or telephony and data connections.

Click an icon or hyperlink below to view the datasheet.