The BC817-40Q-13-F is a general-purpose PNP bipolar transistor designed for low power amplifier and switching applications. It has a maximum collector current of 500mA and a maximum collector-emitter voltage of 45V. The transistor is housed in a SOT-23 package, making it suitable for small and compact electronic devices. The BC817-40Q-13-F has a low saturation voltage and high current gain, making it efficient for switch mode power supplies and other high-speed switching applications. With a cutoff frequency of 100MHz, this transistor is capable of handling moderate frequency signals. The BC817-40Q-13-F is RoHS compliant and is suitable for use in a wide range of electronic circuits