MMSZ15T1G is a Zener Diode manufactured by ON Semiconductor, It has a voltage rating of 15V and a maximum power dissipation of 500mW. This component is designed to maintain a constant voltage if input voltage varies. It has a wide range of applications, which include voltage regulation, Voltage Clamping and Surge Protection. It is a surface mount device with a package size of SOT-23 and has two terminals, which makes it easy to use in circuit designs.