The DTC143ZE is a Digital Transistor NPN 100mA 50V SOT-523 RoHS manufactured by Changjiang. It is a three terminal, surface mount device designed for switching and amplifier applications. It is capable of supplying up to 100mA and can operate with a minimum voltage of 50V. It is RoHS compliant, which means it is free of critical elements such as cadmium, mercury, hexavalent chromium, certain polybrominated biphenyls, and others. The device is lead (Pb) free and halogen free, making it more environmentally and safety conscious. Additionally, it is constructed using SOT-523 surface mount technology, which allows for low power consumption and higher efficiency.