2 layers51.8 × 21 mm

Boards in 1 GitHub repository, designed in KiCad, that use the MM1Z20V by JF (1 Independent 100nA@15V 18.8V~21.2V 20V 500mW 50Ω SOD-123 Zener Diodes ROHS). See how each wires it, with its parts, size, README and files; the MM1Z20V’s symbol, footprint and pinout are on its own page.
