Semi-insulating SiC Substrate

Semi-insulating SiC Substrate Manufacturer and Supplier offering 4inch 6inch and 8inch HPSI SiC Substrate. HPSI means high purity semi-insulating type. These SiC Substrates also have high resistivity >1E7ohm.cm and wafer with thickness is 500±25um. We can supply both D grade and P grade HPSI SiC Substates. As the reliable SiC Substrate Manufacturer, we have been manufacture wafers in many years. These semi-insulating SiC Substrates can be used to grow GaN Epi layer to make microwave RF devices such as HEMT, which are resistant to high temperature and high frequency, and are mainly used in 5G communication, satellite, radar and other fields.

HMT Semi-insulating SiC Substrate Picture and Packing

Application of SiC Substrate in 5G communication

In wireless communications and radar systems, RF devices serve as the core components for signal transmission and processing, where their performance is critical to system stability. Leveraging the wide bandgap properties of semi-insulating silicon carbide (SiC), RF devices built on this platform offer exceptional advantages such as low loss, broad frequency bandwidth, and high power density. These capabilities position SiC-based solutions as a key enabler for next-generation 5G and military communication systems.

High-Voltage Capability
SiC material exhibits a breakdown field strength over 10× higher than silicon (Si), enabling SiC power modules to achieve 1/10 the on-resistance and size of Si-based solutions. This drastically reduces power loss in high-voltage applications.

High-Frequency Performance
With switching speeds 3–10× faster than silicon, SiC components are ideal for high-frequency operation and ultrafast switching—critical for meeting the demanding RF requirements of 5G communications.

High-Temperature Operation
Thanks to its wide bandgap and high thermal conductivity, SiC devices operate reliably at elevated temperatures, minimizing current leakage while simplifying thermal management systems.

RF Device Applications
SiC-based GaN (Gallium Nitride) is the premier material for 5G base station power amplifiers, combining SiC’s superior thermal conductivity with GaN’s high-power RF output at high frequencies. This synergy meets 5G’s stringent demands for high-frequency performance and power-handling capability.