Co., LtdThe MMDT3904V with SOT-563 package is a bipolar transistor manufactured by Changjing Electronics Technology Co., Ltd. It is constructed from the NPN architecture and is designed for use in low and medium-power applications, such as switching, interface, and driver-circuit applications. It is RoHS compliant and offers features such as low saturation voltage, high power gain, and a high current capacity of 1A. The MMDT3904V has a maximum power dissipation of 300mW at a temperature range of -65 to +150°C. This transistor can operate in a wide voltage range from 15V to 45V and can operate at a wide temperature range of -55°C to +150°C.