The NTE5513 Thyristor is a TO66-packaged, surface-mount component designed for Switch Mode Power Supplies (SMPSs) and other power control applications. It is constructed from a PNPN silicon device and has a 600V breakdown voltage and an on-state current capability of 5A. It provides an off-state leakage current of 15mA, allowing for efficient power savings in applications with low switching frequencies, such as in standby or sleep modes. The TO66 package allows for easy soldering and mounting, making it an ideal choice for modern PCB layouts. This NTE part is designed for reliable, low-noise operation and provides a great balance between performance and cost.