The MMBFJ201 is a JFET N-Channel Transistor General Purpose manufactured by ON Semiconductor. It is a P-Channel JFET, which means it is designed for use as a switching circuit or amplifier in electronic circuits. It has a breakdown voltage of 25V and a continuous drain current of 100mA. It is a surface mount device, designed to be soldered onto the PCB. The MMBFJ201 is rated at a maximum power dissipation of 500mW. It has an operating temperature range of -55 to 150 degrees Celsius. The package size is 0.6mm x 0.6mm x 0.55mm.