The Sanken 2SB1647 is a silicon PNP transistor that is used for applications such as logic chips, small signal audio amplifiers, and various switching circuits. It features a low noise design, allowing for wideband noise specifications, and an epitaxial base structure. It has a collector to base voltage of 80V, a collector to emitter voltage of 60V, and a maximum power dissipation of 500mW. The 2SB1647 offers excellent gain linearity and a high fT (transition frequency) of 100 MHz. It is available in a TO-126 or TO-126G package, and can be designed into a variety of electronic applications.