Heterojunction Bipolar Transistor (HBT)

A Heterojunction Bipolar Transistor (HBT) is a high-speed electronic switch used in radio and communication devices. It consists of two different types of semiconductor materials joined together, creating a boundary called a heterojunction. This design improves the transistor's ability to control electrical signals efficiently, enabling faster operations and lower power consumption. Essentially, HBTs amplify electrical signals by allowing current to flow smoothly through different material layers, making them ideal for applications requiring rapid switching and high frequency performance, such as smartphones, radar systems, and satellite communications.