The 1.5KE47A with 64.8V 44.7V 40.2V DO-201 TVS ROHS is an electrical component manufactured by Yageo. It is a bidirectional, transient voltage suppressor designed to protect sensitive electronic components from a damaging voltage surge or spike. It is a unidirectional transient voltage suppressor that comes in a DO-201 plastic package and is RoHS (Restriction of Hazardous Substances) compliant. It has a maximum breakdown voltage of 64.8V, a clamping voltage of 44.7V, and a working voltage of 40.2V.