The Polytronics SA151N with Discharge Tubes (GDT/TSS) SMD RoHS is an electronic device designed to protect equipment from high voltage transients. It is a three-terminal surface mount transient suppressor that utilizes multiple GDT/TSS (Gas Discharge Tube/Tube Spark Gap Switch) to provide a fast response to transient events. The SA151N is RoHS compliant and designed for applications where a medium-to-high speed response is required. It has a nominally rated voltage of 5.5V, a peak pulse rating of 400V and a peak pulse current of 1.5A. It is suitable for applications in telecommunications, industrial electronics, and consumer electronics.