BT169G-L,412 is a one-way thyristor (TRIAC) manufactured by Infineon. It is a silicon-controlled rectifier (SCR) type of component with a rated blocking voltage of 600 volts. Its maximum current handling capacity is 4A. This component is designed for contactless switching applications with RoHS compliance. It is packed in a SOT-54-3 package with short-circuit protected gate. This is commonly used for motor speed controls, controllers and other electronic applications.