The BT134-800E is a TO-126 TRIAC manufactured by FUXINSEMI that is widely used for power control and surge protection applications. It is a RoHS compliant part, meaning that it does not contain hazardous materials such as Lead, Mercury, Cadmium, and Hexavalent Chromium. This Triac features a voltage rating of 800V and a current rating of 4A. It is capable of triggering efficiently at low gate currents, being suitable for use in applications including motor control, dimmers, lighting, switches, and power supply. It also features high breaking capacity, reliable re-ignition capability, and temperature independent performance for a high level of reliability.