The BZT52B22 with Zener Diodes SOD-123 RoHS manufactured by Formosa is a surface mount, SOD-123 package, RoHS compliant, 2-pin Zener diode with a zener voltage of 22 volts. It is designed for use in protective circuits, voltage regulating, and many other switching applications. The Zener Diodes have a low reverse current leakage current, a high peak power dissipation, a low zener impedance and a forward current of 500mA. The dual element diode offers superior reverse power dissipation in an ultra-small package.