The DTA123YUA is a transistor made by Luguang, with the following parameters: PNP bipolar type with a maximum voltage rating of 50V, a current rating of 0.1A, and a power rating of 200mW. It is packaged in the compact SOT323 package, and features a built-in source resistore of 2.2kO. This transistor is ideal for a variety of applications, such as amplifying small signals, switching applications, and general-purpose power control.