The RS405K-800 with Thyristors - TRIACs Two-way thyristor is a 200V-800V RoHS compliant TO-252-2 (DPAK) package manufactured by Haoruijia. It is a bidirectional thyristor designed for use in AC switching applications, and it can be used in a variety of power applications such as motor control, temperature controls, and DC to DC conversion. The RS405K-800 features both snubber protection and over voltage protection, offering both reliability and safety features. The thyristor can also be used in applications requiring a low holding current, thanks to its low turn on voltage and low gate current. It has a maximum power dissipation of 2.5W and a maximum on-state current of 800mA. The package is lead-free and RoHS compliant, making it suitable for a wide range of applications.