Types of GaAs Transistors and Their Uses

Because of its higher electron mobility than silicon (Si), gallium arsenide is a compound semiconductor material frequently used in high-speed, high-frequency, and optoelectronic applications. Because of this, a GaAs wafer is especially well suited for transistors in applications such as microwave communications, RF (radio frequency) amplification, and even optoelectronic devices like LEDs and lasers.

Two main types of transistors take advantage of GaAs’ properties: Metal-Semiconductor Field-Effect Transistors and High-Electron Mobility Transistors. Let’s review their uses and the benefits they offer.

Types of GaAs Transistors

There are two main types of transistors made from GaAs:

• MESFET (Metal-Semiconductor Field-Effect Transistor): This type of transistor uses a metal-semiconductor junction instead of the typical metal-oxide-semiconductor junction used in silicon-based ones. GaAs MESFETs are commonly used in microwave and high-frequency applications because they operate at higher speeds.

• HEMT (High Electron Mobility Transistor): HEMTs are another type of transistor that takes advantage of the high electron mobility of GaAs. These transistors typically have a heterostructure, where two different semiconductor materials (such as GaAs and AlGaAs) are layered to create a channel with a high concentration of electrons. HEMTs are widely used in high-frequency applications like radar and communication systems.

Find the GaAs Wafer You Need

GaAs wafers have higher electron mobility than silicon, meaning electrons can move faster through GaAs. This makes them ideal materials for developing transistors in high-frequency applications, like telecommunications, radar systems, and optoelectronics.

Nevertheless, to make the most of this unique material, finding a reliable provider is key. Here at Wafer World, we have a strict quality control process to ensure our GaAs wafers are ready for use. If you’d like to learn more about it, reach out!