The Semtech Corporation S2KW4C-1D is a standard diode that is designed for use in rectifier applications. It has a maximum DC reverse voltage of 4000 V and an average rectified current of 4A. The S2KW4C-1D has a standard recovery time of more than 500ns and is suitable for use in applications that require fast switching. It comes in a module package and can be mounted on chassis. Although it is obsolete, it is still a reliable diode for rectifier applications.