The MM3Z12VST1G is a Zener Diode manufactured by ON Semiconductor. The diode has a Zener Voltage of 12V with a power rating of 200mW. It has an operating temperature range from -65°C to 200°C and a Maximum Reverse Leakage of 10µA. The diode is designed for surface mount technology with a SOD123F package and has a low profile allowing for easier mounting.