The SST16B-800CW is a thyristor TRIAC device manufactured by SMC Diode. It comes in a TO-220B RoHS package and is designed for use with low levels of electrical power. The TRIAC has a gate-triggering voltage between 1.6V and 2.8V, and a current range of 800A. This device can be used to switch on or off a current source at a certain voltage. It is also useful for regulating smooth flow of electrical current in applications such as home appliances, security systems, and motor control. The SST16B-800CW has a variety of safety features, including an overvoltage protection circuit, temperature protection, and surge protection. Additionally, its RoHS packaging makes it environmentally friendly and helps reduce waste.