The BC857S is a small-area, low power PNP bipolar transistor manufactured by MSKSEMI with a SOT-363 package. It is a rated as a low-noise, general-purpose, low-power transistor with good current gain and low collector-emitter saturation voltage. It is suited extremely well for a wide variety of applications, including amplifiers, switches, low-power, DC/DC converters, signal and active-load circuits, and the like. The BC857S complies with the European Union's Restriction of Hazardous Substances (RoHS) Directive and provides a leads-free component with an improved environmental profile.