The BZT52C10S with Zener Diodes SOD-323 RoHS is a type of diode, a small electronic part manufactured by Formosa. It operates as a two-terminal voltage regulator, which means that when the diode is connected in its reverse direction, current can flow from its anode to its cathode, providing a stabile voltage and regulating against spikes or drops of that voltage. The SOD-323 RoHS package of the BZT52C10S makes it suitable for low power surface mount applications, as it only requires a small space for installation. When compared to traditional axial packages, the SOD-323 RoHS package is much smaller, making it attractive for use in portable electronics and consumer items. It is also RoHS (Reduction of Hazardous Substances) compliant, meaning that it limits the use of hazardous materials during its production.