The UG4KB40 is a high-performance Ultrafast Rectifier manufactured by SMC Diodes. Supreme Components International is an authorised distributor of SMC Diodes, ensuring you receive genuine components. This diode features a forward current of 4A and a reverse voltage of 400V, making it suitable for a wide range of applications. Its ultrafast recovery time minimizes switching losses and improves efficiency in high-frequency circuits. The UG4KB40 is commonly used in power supplies, inverters, freewheeling diodes, and other applications where fast switching and low reverse recovery are critical. Choose the UG4KB40 for reliable performance and efficient rectification in your electronic designs. Supreme Components International provides comprehensive support and fast delivery for all your component needs.