this post was submitted on 27 Sep 2025
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Touch sensor part ID? (sopuli.xyz)
submitted 1 month ago* (last edited 1 month ago) by Sadbutdru@sopuli.xyz to c/askelectronics@discuss.tchncs.de
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Can anyone help me identify this touch sensor module from a UK home bathroom light switch?

The IC is a QT113 charge transfer touch sensor, the only writing on the board is SAT 02.

I'd like to know enough about it to order replacements.

https://sopuli.xyz/pictrs/image/256ab3e9-90b3-4e38-affe-5c716332cbc3.webp

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[–] SW42@lemmy.world 1 points 1 week ago

It looks to me like the through-hole Plating is gone. Could be worth soldering a wire from the top pad, through the hole directly to the “grid” on the back side. Need to scratch a bit of solder mask off the grid fill first.