The MM3Z16BW is a SOD-323W Zener Diode ROHS component manufactured by Jingdao. This diode is a two-pin, surface-mount device that is designed to provide overvoltage protection in applications such as communications systems and power systems. The diode is designed to be mounted on a printed circuit board with two soldered pins, and the body measures 3.05 mm × 1.70 mm. It has a maximum power dissipation of 500 mW, a maximum peak reverse power of 625 mW, and a reverse voltage breakdown voltage of 16 V. The maximum operating temperature is rated up to 125°C. It is RoHS compliant, meaning it is free of lead and other hazardous materials, making it safe for use in commercial and industrial applications.