Original poster: "Rajesh Seenivasan" <rajeshkvs-at-hotmail-dot-com> Hello, Are Trench gate design IGBts also used in SSTCs ? Any one has used these in their designs ? CM150DU-12F is a trench gate IGBT and CM150DU-12H is normal IGBT. Which one is better for SSTC ? Thanks, Rajesh.