Coherent Advances Silicon Carbide Thick Epitaxy Capabilities for High-Voltage AI Datacenter and Industrial Power Applications Up to 10kV

Why It Matters

The breakthrough accelerates SiC adoption in power‑critical markets, lowering energy costs and boosting performance for AI datacenters and large‑scale industrial grids.

Key Takeaways

• 10 kV SiC devices now producible on 150 mm/200 mm wafers
• Thick epitaxy improves efficiency and power density
• Enables compact converters for multi‑megawatt datacenters
• Supports electrification of rail, renewable, fast‑charging
• Strengthens Coherent’s position in wide‑bandgap market

Pulse Analysis

The surge in AI workloads and global electrification is reshaping power‑electronics demand. Silicon‑carbide, a wide‑bandgap material, offers lower conduction losses and higher thermal tolerance than silicon, making it ideal for high‑voltage, high‑efficiency converters. Industry analysts forecast that SiC market revenue will exceed $10 billion by 2030, driven by datacenter scaling, renewable integration, and electric‑vehicle infrastructure. Coherent’s new thick‑epitaxy capability aligns with this trajectory, providing manufacturers a path to higher voltage devices without sacrificing wafer throughput.

Coherent’s platform leverages 150 mm and 200 mm wafer sizes, delivering epitaxial layers thick enough to sustain 10 kV operation. This thickness reduces the number of series‑connected devices, simplifying circuit topologies and cutting down on parasitic inductance. For AI datacenters, where power‑density and cooling constraints are critical, the technology translates into smaller power modules with up to 15 % higher conversion efficiency. In industrial settings—such as grid‑scale inverters, rail traction, and fast‑charging stations—the higher voltage rating enables longer transmission distances and lower cable losses, directly impacting operational expenditures.

Competitive pressure in the SiC space is intensifying, with players like Wolfspeed, Infineon, and STMicroelectronics expanding their high‑voltage portfolios. Coherent’s end‑to‑end approach—from substrate to epitaxy—offers a differentiated supply‑chain advantage, reducing lead times and enhancing reliability for large‑scale deployments. Looking ahead, the company’s roadmap hints at scaling beyond 10 kV and integrating advanced device architectures, positioning it to capture a sizable share of the next wave of power‑electronics innovation.