3.5mm 4-Pole, TRRS, Audio Plug to Terminal Block Adaptor
This is the 3.5mm (1/8″) 4-Pole (TRRS) Audio Plug Terminal Block. TRRS stands for Tip, Ring, Ring, Sleeve. It has four total conductors – three signals and a ground as opposed to a more common stereo jack’s two.
This connector is most often used in smartphones & cellphones to provide stereo audio and one mic channel. As an example, on the Raspberry Pi, the extra connector is used for composite video.
Note that the green block labels it as GND-blank-Right-Left which is the most commonly used order. However, it would be more technically correct to just label it Sleeve-Ring-Ring-Tip: goes in the same order as the four contacts on the plug.
3.5mm TRRS Audio Plug to Terminal Block Dimensions:
- Length: 40mm (1.57″)
- Weight: 6.5g
- Compatible wire gauge: 30-16AWG
- Terminal pitch: 3.5mm