Technical Article: Have Silicon Carbide Schottky Diodes made Silicon Rectifiers Obsolete? This article was originally published in the December 2007 issue of ECN. Download PDF View PDF Login Required A MyPI account is required to receive email notifications for document updates. Please login or register for an account to continue. Continue × Notify Me of Updates Products Qspeed H-Series Diodes Qspeed Q-Series Diodes Qspeed X-Series Diodes Qspeed Automotive Qualified Diodes