JMThe MMBT3904 with 100@10mA,1V,NPN SOT-23 is a Bipolar Transistor (BJT) manufactured by HXY MOSJM. It complies with the ROHS and is a Surface Mount Technology (SMT) device. It is an NPN transistor, which uses the Base-Emitter-Collector structure and is used to amplify or switch electronic signals. It has relatively low gain, but provides fast switching speeds, making it an excellent choice for high-speed applications. The MMBT3904 has an impressive power dissipation rating of 0.6 watts and offers a wide range of voltage and current ratings, making it a flexible component for many electronic applications.