The BC857 transistor is an NPN/PNP SOT-23 RoHS transistor manufactured by Jinyu. It is designed for use in a wide range of applications, including digital, analog, low noise, and power amplifier circuits. The BC857 has a low saturation voltage and excellent thermal resistance, making it ideal for use in applications that require higher power dissipation. Features include: low collector-emitter saturation voltage, high frequency response, and good base-collector capacitance. The BC857 is an environmentally friendly, RoHS-compliant device.