The BZT52C4V3S Electronic Part with SOD-323 Zener Diodes ROHS manufactured by FOSAN is a silicon epitaxial planar zener diode designed for use in stabilizing and clipping circuits with high power rating. It has a DO-35 plastic case with an extended miniature type. The mounted on the FR-4 board makes it suitable for surface mount technology. The diode can operate in the temperature range of -65°C to +150°C. It is equipped with a nominal Zener voltage of 4.3V and has a power dissipation rating of 500mW. The voltage and current parameters tested are 3.3V, 5V, 10V, 15V, and 20V DC. It has capacitance parameters tested just for 3.3V, 5V, 10V, 15V and 20V DC with low reverse leakage current. It comes with a RoHS compliant package and delivers reliable electrical performance.