The MMBTA28-7-F is a general-purpose NPN surface mount transistor in a SOT-23 package. It features high current and low voltage capabilities, making it suitable for a wide range of applications in electronic circuits. The transistor has a maximum collector current of 0.6A and a collector-emitter voltage of 30V. It has a high transition frequency of 300MHz and a low saturation voltage of 0.3V. The MMBTA28-7-F is designed for use in switching and amplification circuits in a variety of devices, including computers, telecommunication equipment, and consumer electronics. Its compact size, high performance, and reliability make it a popular choice for design engineers looking for a versatile and cost-effective solution for their projects