The APTDF400KK120G is a discrete semiconductor module power module with diode manufactured by Microchip. It is a surface mount, 4-pin, 600V, 400A, and 120KHz fast switching freewheeling diode with soft recovery. It is designed with a low forward drop versus current and high surge current capability. The package is RoHS compliant with high thermal capability, making it suitable for use in a variety of power conversion applications, particularly in snubbers and EMI filters. The APTDF400KK120G is ideal for switching power supplies, AC/DC converters, DC/AC inverters, buck and boost converters, and motor control applications, as well as other high-efficiency, high-performance applications.