The SD03C ESD Protection Device manufactured by Yongyutai Electronics is a four-volt, 10.5-volt, and 3.3-volt bi-directional SOD-323 component that is RoHS compliant. This device provides protection from static electricity, allowing electric current to pass in both directions without interfering with the system. The package is small enough to be used in very tight spaces, making it ideal for applications with limited space. Additionally, this protection device has a high-temperature tolerant performance and can be used in high-temperature industrial environments. Furthermore, it is designed to reduce energy consumption and, therefore, overall costs compared to other similar components.