2 layers83.9 × 114.9 mm

Hot plate controller
rohamid/Hot-plate-controller-master
STM32 based hot plate PCB soldering controller
81 parts
Boards in 1 GitHub repository, designed in KiCad, that use the MJD122T4 by STMicroelectronics (1000 100V 10uA 2.8V 20W 4.5V 4V 5V 8A NPN TO-252-2(DPAK) Darlington Transistors ROHS). See how each wires it, with its parts, size, README and files; the MJD122T4’s symbol, footprint and pinout are on its own page.

rohamid/Hot-plate-controller-master
STM32 based hot plate PCB soldering controller