2 layers70 × 50 mm

JBC controller
microbug/soldering-station
DIY soldering station compatible with JBC C245 handle/tips
42 parts6MIT
The FSMRA3JH is a tactile Switche made by TE Connectivity in a 插件 package with 4 pins. Plugin Tactile Switches ROHS.
302 are in stock at JLCPCB (part C22418513). 1 open-source board in 1 repository on GitHub use it.
The library has no symbol for this part yet.
The library has no footprint for this part yet.

microbug/soldering-station
DIY soldering station compatible with JBC C245 handle/tips
插件, with 4 pins.
JLCPCB lists it as part C22418513, with 302 in stock; the sellers' links on this page open their listings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.