The RK1606A-SW is a two-way thyristor, manufactured by Haoruijia and designed to be used in AC circuits up to 600 Volts. It has two Thyristors (TRIACs) inside the package—each with two terminals for controlling current and voltage through the device, plus two terminals for connecting to the AC source. Its make (Snubberless) and break (Zero Voltage Switching) times are both short, reducing electrical noise in the circuit. The RK1606A-SW’s surface-mount package is RoHS compliant, making it an environmentally friendly solution for applications in consumer, commercial, industrial, and medical industries.