This is a 3.5mm TRRS SMD audio jack. TRRS connectors are the audio-style connectors that you see on some phones, MP3 players and development boards. TRRS stands for "tip, ring, ring, sleeve," which reflects the fact that, unlike a standard stereo connector, this actually has three conductors and a ground. Some devices use the extra conductor for a microphone (like hands-free headsets) or to carry a video signal (like in some MP3/MP4 players). https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2013-11-23 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2016-11-25 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2016-11-29 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2016-12-10 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2016-12-14 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2017-11-24 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2017-11-28 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2018-05-05 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2018-11-21 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2018-11-27 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2022-02-21 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2025-04-11 https://elecena.pl/product/4495577/audio-jack-3-5mm-trrs-smd 2025-04-13