The MM3Z18VT1G is a Zener diode, manufactured by ON Semiconductor, with a voltage rating of 18V and a power rating of 200mW. It is a three-terminal active component with a low-leakage current and a breakdown voltage of 18V. The device provides an exceedingly reliable, low-cost solution to a variety of applications, including temperature sensing and overvoltage protection, among others. It has a maximum junction temperature of 150°C, and peak reverse power dissipation of 200mW. It features a variety of mounting options, including surface mount, through-hole, and axial leads. Its low leakage current ensures that when coupled with proper circuitry, it can be used in a wide variety of electronic systems.