The MMBT3904 transistor manufactured by KEXIN is an NPN/PNP transistor packaged in a SOT23 RoHS compatible package. It is designed for low voltage, low current switching and amplifier applications. The MMBT3904 has high quality, low power consumption and excellent on-state current gain characteristics which make it suitable for use in a wide range of applications. It also has a low minimum breakdown voltage, low offset voltage and fast switching speed. This transistor is RoHS (Restriction of Hazardous Substances) compliant, meaning it does not contain hazardous materials such as lead, mercury, cadmium, hexavalent chromium and certain other restricted materials.