Littelfuse QVxx16xHx 16A High-Temperature Alternistor Triacs are designed with extremely high dv/dt capability for AC switching and phase control applications, especially for inductive loads applications. The QVxx16xHx alternistor triacs only operate in quadrants I, II, and III and are used in circuits requiring high commutation performance. Internally isolated packages (TO-220AB or TO-263AB) offer better heat sinking with higher isolation voltage. Typical applications include AC solid-state switches, motor controls, light dimmers, power tools, kitchen and home appliances.