MM1Z22BW with SOD-123W is a zener diode manufactured by Jingdao which has been manufactured to comply with Restriction of Hazardous Substances (RoHS) directive. It is a low noise, low leakage, low current-voltage beyond breakdown voltage, low capacitance and low on-resistance. It provides reverse-bias protection against voltage surges and overvoltage transients. It has an operating temperature range of -20°C to +85°C. It is designed to handle currents of up to 500 mA. It has a maximum power rating of 500mW with an alias of 1W. It has a thermal resistance of 140°C/W and a breakdown voltage of 22V. It is suitable for applications such as voltage regulators, power supplies, data outputs, and switching systems.