1200 V IGBT with anti-parallel diode in TO-247 package High speed 1200 V , 25 A hard-switching TRENCHSTOP™ IGBT4 co-packed with free-wheeling diode in a TO-247 package provides the best compromise between switching and conduction losses. The key feature of this family is a MOSFET-like turn-off switching behavior, leading to low turn off losses.