KTB631K-Y-U/PH is a PNP transistor manufactured by KEC. It is a TO-126 RoHS package and is rated at 1A and 120V. This transistor is used in a variety of electronic applications where an affordable and reliable medium power switching and amplification are needed. It has three terminals, collector, base, and emitter, and is made with a reliable PNP design. KTB631K-Y-U/PH can be used in various commercial, industrial, and consumer applications, such as switching, amplifying, or regulating of power.