The BC817-40 is a surface-mount (SOT-23) NPN Plastic Encapsulated Transistor (PNP) manufactured by SLKORMICRO, and is RoHS compliant. It is a small-signal Bipolar Junction Transistor (BJT) suitable for use in general purpose switching and amplification applications. It is a low-power, low-noise device with an operating current of 25mA, a maximum collector current of 300mA, and a maximum power dissipation of 500mW. It has a Collector-Emitter Voltage of 80V, and a Collector-Base Voltage of 100V. It has an operating temperature range of -55°C to +150°C, and a storage temperature range of -65°C to +150°C. It is available in SOT-23 packaging.