This document describes the features and characteristics of the FDH15N50 / FDP15N50 / FDB15N50 products, including low gate charge Qg, improved gate, avalanche and high reapplied dv/dt ruggedness, reduced rDS(ON), reduced Miller capacitance and low input capacitance, improved switching speed with low EMI, etc. The product is suitable for switch mode power supplies (SMPS) applications, such as PFC Boost, Two-Switch Forward Converter, Single Switch Forward Converter, Flyback Converter, Buck Converter, and High Speed Switching.