The BU406A is a NPN/PNP transistor manufactured by FeiHong. It is a TO-220 case type with RoHS compliant lead. This transistor has a maximum voltage rating of 800V, a well-suited current rating of 5A, and a large IC of 630W. Its switching speed is good for applications requiring fast switching speeds. It is a epitaxial planar type transistor, with high reliability and superior switching characteristics at high frequencies. This transistor comes with 6.3mm long leads which make it very easy to install. It is best suited for applications such as inverters, converters, controllers, power bases, amplifiers, and switching applications.