This document is about STPS40SM120C product's production data. The product features high current capability, avalanche rated, low forward voltage drop and high frequency operation. It is suitable for high frequency switch mode power supply. The device is packaged in TO-220AB, TO-220AB narrow leads and I2PAK, and is intended to be used in notebook, game station and desktop adapters, providing in these applications a good efficiency at both low and high load.