The BC817-40 is a Transistor (NPN/PNP) SOT-23 RoHS manufactured by KEXIN. It is a NPN/PNP Bipolar Transistor with a very low profile, making it ideal for space-constrained applications. It features a Collector-Emitter voltage of 40V, a maximum collector current of 150mA, and a low noise. Its package type is SOT-23, which allows for reflow soldering, and it is RoHS compliant. Additionally, it features fast switching times and can be used in switching applications and other applications requiring high-speed switching.