The MCR100G-8-B-AE3-R is a Thyristor - TRIAC (Triode Alternating Current), developed by Unisonic, a Taiwanese manufacturer of electronic components. This model is manufactured in a SOT-23 RoHS package and is designed for general purpose AC switching applications such as controlling heaters, motor starters, solenoids, and relay drivers. The MCR100G-8-B-AE3-R consists of two Thyristors with a voltage rating of 800V and a power rating of 0.5A. This device is a bidirectional three-quadrant Thyristor that is capable of controlling AC circuits in both directions and has a triggering gate voltage range of 2 to 8V. This model is widely used in industrial, automotive, and consumer electronics. This product is RoHS compliant and is compliant with the European Union's Restriction of Hazardous Substances (RoHS) directives for a safe and clean environment.