The MMBFJ202 is an NPN Bipolar Small Signal Transistor manufactured by ON Semiconductor. It is designed for use in low voltage (<100V), high speed switching applications. This transistor has an operating voltage of 40 V and a maximum collector current of 250mA. The MMBFJ202 also has a typical hFE of 200 and a thermal resistance of 360°C/W. It is used in a variety of applications including motor control, audio amplification, power management and LED lighting.