The MMBT3904TT1G from ON Semiconductor is a general-purpose npn transistor in a miniature surface-mount package, designed for optimal performance in low-power, digital switching applications. It is an ultra-small SOT-523 package that meets the demanding needs of today's circuit designers for compact products. The MMBT3904TT1G provides a low-noise, high-gain amplifier, and offers a maximum collector current (Ic) of 200 mA and a maximum collector-emitter voltage (Vce) of 40V. It is also RoHS compliant and suitable for a variety of industries, including consumer electronics, automotive, medical and telecom.