Synthetic Sapphire is Transforming GaN HEMT Technology

Sapphire substrates are revolutionising the field of GaN HEMT (Gallium Nitride High Electron Mobility Transistor) devices. As demand for high-efficiency power electronics grows, sapphire substrates have emerged as the preferred material over traditional options like Silicon (Si) and Silicon Carbide (SiC). But why is sapphire becoming the go-to choice?

Higher Breakdown Voltage  

Sapphire substrates allow GaN HEMT devices to achieve significantly higher breakdown voltages. This is crucial for high-power applications where maintaining performance at higher voltages is essential. Sapphire’s excellent thermal conductivity and insulating properties help manage heat more effectively than silicon, preventing damage from overheating.

Cost-Effectiveness  

While SiC offers similar voltage advantages, it comes at a much higher cost. Sapphire substrates provide a more budget-friendly solution without sacrificing performance, making them ideal for commercial applications where costs need to be controlled without compromising quality.

Improved Thermal Management  

The superior thermal conductivity of sapphire aids in better heat dissipation, a vital factor for high-power devices. Effective heat management ensures the longevity of GaN HEMT devices and reduces the risk of failures due to overheating, enhancing their reliability.

Material Compatibility and Performance  

Sapphire’s compatibility with GaN is suggested to result in fewer defects during the manufacturing process, leading to higher-quality devices. GaN HEMT devices on sapphire substrates also benefit from lower on-state resistance and higher electron mobility, improving overall device performance.

Sapphire substrates are paving the way for more efficient, cost-effective, and reliable GaN HEMT devices. With their unique combination of benefits, sapphire offers a superior alternative to traditional substrates in high-power electronics. 

Discover how we aim to tailor our sustainable synthetic sapphire glass to suit your specific application needs by contacting our Sales & Marketing Manager, Derek Bogaert, at hello@alphasapphire.com for further information.