The BC856B is an NPN-type, surface-mount transistor manufactured by Youtai in a SOT-23-3 package. It is RoHS-compliant, meaning that it complies with regulations concerning hazardous substances. The BC856B has a low noise amplifier, high frequency oscillator, low-voltage amplifier, or any other circuit requiring a general-purpose small-signal NPN-type transistor. It features EASY-TO-USE encapsulation, which makes the device easy to use in applications, including automatic insertion. It is a suitable choice for power supply circuits, including medical devices.