The BC857B is a PNP transistor housed in a SOT-23 RoHS package manufactured by AnBon. This transistor has a low current, low voltage, small, surface-mounted device. It is suitable for use as an electronic switch, amplifier, or specific signal-processing applications. The maximum power dissipation is 500 mW at 25°C. It has a gain of 60 at 1.0 mA, a maximum current of 200 mA, and a maximum voltage of 40V. This transistor is lead-free and RoHS compliant, making it a highly reliable and affordable solution for many applications.