www.DataSheet4U.com MCR310 Series Preferred Device Silicon Controlled Rectifiers Reverse Blocking Triode Thyristors Designed for industrial and consumer applications such as temperature, light and speed control; process and remote controls; warning systems; capacitive discharge circuits and MPU interface. Center Gate Geometry for Uniform Current Density All Diffused and Glass-Passivated Junctions for Parameter Uniformity and Stability Small, Rugged, Thermowatt Con.