MMSZ5231BT1G
by onsemi(安森美)For voltage limiting or a simple reference circuit, the MMSZ5231BT1G is an onsemi Zener diode in a SOD-123 surface-mount package. The downloadable symbol exposes its two electrical connections, while SOD-123_L2.8-W1.8-LS3.7-RD provides the corresponding two-pad footprint. Both are available free as KiCad files, together with a 3D model that shows the package in an assembled board view. Their provenance is a real ProtoFlow import, converted and checked in the editor. This combination supports carrying the named diode from the circuit diagram into the PCB layout and mechanical review. Open MMSZ5231BT1G directly in ProtoFlow.
Download KiCad files
Use MMSZ5231BT1G in your design
ProtoFlow is a free, AI-native EDA tool. Drop this part onto a schematic, route a PCB, and let the AI copilot help. The symbol, footprint, and 3D model come in linked and ready.
Free to start. macOS, Windows and Linux. No sign-up to try.

