TRENCHSTOP™ 5 S5 Medium Speed Switching IGBTs Infineon TRENCHSTOP™ 5 S5 Medium Speed Switching IGBTs are the link between the L5 and H5 and address applications switching between 10kHz and 40kHz. The IGBTs deliver high efficiency, faster time to market cycles, circuit design complexity reduction, and PCB bill of material cost optimization. Infineon S5 IGBTs are packed with features to help designers achieve goals without the need to increase circuit complexity.