BT258S-800LT.118 is a triac power switch manufactured by WeEn Semiconductor. It is designed with an 800V blocking voltage, an isolating structure, and an integrated sensitive gate with a trigger current of 0.3mA, optimized for sensitive load control. The BT258S-800LT.118 can be used in open loop and closed loop applications efficiently and economically. It is suitable for installing in a wide range of applications, such as light dimmers, motor speed controllers, and domestic appliances.