The SFI0402-240E2R5PP-LF is a surface-mount 0402 form factor TVS (Transient Voltage Suppressor) diode manufactured by SFI. It is designed to protect delicate semiconductor components from electrostatic discharge (ESD) and other voltage transients. It is built with a low capacitance that makes it suitable for high-speed data line applications, and is RoHS compliant, meaning it is free from hazardous and environmentally-damaging substances.