The 3RP400L-8 with Discharge Tubes (GDT/TSS) Through Hole RoHS manufactured by Yageo is an electronic part used to act as a protection circuit that can automotive overvoltage protection. It works by protecting sensitive electronic components from voltage spikes and transient voltage surges. It is a RoHS compliant lead-free component with double-sided discharge tubes and through-hole mounting hole design. The discharge tubes have a voltage rating of 400V, a current rating of 8A, and an ambient temperature rating of -40°C to 85°C. The component also features mechanical shock and vibration resistant properties. It is also designed with built-in fusible links that prevent circuit overloads, reducing the need for manual tripping of the circuit breaker.