The BTA20-800CW, manufactured by Changjiang, is a TRIACs TO-220AK RoHS electronic component. It is a 3 terminal semiconductor device made of Thermistor material that is specifically used for controlling both high voltage and current of AC in applications such as heating control, lighting control, motor control, and switching power supply applications. It has a maximum gate current of 15mA, on-state current of 800A, average repetitive on-state current of 400A, maximum off-state voltage of 800V, and a blocking voltage of 800V. It has a package type of TO-220AK RoHS and a maximum operating temperature of 125°C.