The Discrete Semiconductor component D45VH10G is a high voltage, fast switching NPN power transistor designed for use in applications where high power and efficiency are required. It features a peak collector current of 10A, a collector-emitter voltage of 450V, and a low saturation voltage of 1.2V at 5A. The D45VH10G also has a fast switching speed, making it ideal for use in power supplies, inverters, and motor control applications. Additionally, this transistor is housed in a TO-220 package, making it easy to mount and heat sink. Overall, the D45VH10G is a reliable and versatile component for high power applications that require a fast and efficient switching performance