The X322512288MPB4SI part is a 3225 pre-ordered transistors ROHS manufactured by Yangxing. These transistors feature a high gain frequency response, and are designed for low-noise operation. The ROHS compliant construction ensures that these parts are free from hazardous materials, which can be used in a variety of applications. They are available from Yangxing in various package sizes, and are appropriate for use in a wide variety of digital and analog circuits.