The MMBT2222ALT1G E-Line Polygon Transistor is a NPN bipolar junction transistor designed for medium-power switching applications. It offers better performance than complementary bipolar transistors and is used in load and line regulation, power switching, and numerous other circuit applications. The transistor is offered in a low-profile E-Line package. It has a maximum power dissipation of 350 mW and a maximum collector-emitter voltage of 60 V. The transistor can also be used in medical, communication, and home appliance applications.