The BT137-800E is a two-way thyristor TRIACs manufactured by Kang Yang. It is designed to be mounted on a TO-263 package with a RoHS compliant feature and a 1W 8A 84A configuration. The BT137-800E is a low power, low voltage, and low on-state resistance TRIAC, which is suitable for both AC and DC loads, and offers superior switching performance due to its low gate current requirement. It also features an isolated construction that ensures low-level protection against EMI noise interference, making it ideal for applications such as AC or DC motor control, heating systems, lighting control, fans, microwave ovens, and others.