The BT138-800,127 is a part of NXP's IGBT family. It is a Logic-level Gate Turn-off Thyristor (GTO) designed for high speed switching and high speed regulation applications. It has a voltage rating of 800 volts and a current rating of 127 amperes. The BT138-800,127 features low gate drive power requirements, a low forward voltage drop, temperature independent non-saturating switching behavior, and a fast switching time with optimized total power loss.