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Sumitomo Electric develops diamond wafers for high-frequency semiconductor devices
Friday, January 30, 2026 at 09:56 PM
Sumitomo Electric is developing diamond wafers specifically designed for high-frequency semiconductor devices, as detailed in their technical review.
Context
Sumitomo Electric Industries has achieved a major milestone in semiconductor materials by developing diamond wafers specifically designed for high-frequency and high-power applications. As the industry approaches the physical limits of Silicon Carbide and Gallium Nitride, diamond is recognized as the "ultimate" substrate due to its unparalleled thermal conductivity and breakdown voltage. This innovation is critical for the upcoming rollout of 6G infrastructure and next-generation satellite communications, where managing extreme heat density remains the primary barrier to performance.
The company’s breakthrough utilizes a proprietary heteroepitaxial growth technique to produce large-scale wafers, aiming for a 2-inch diameter standard essential for commercial viability. By enabling chips to operate at significantly higher power levels without overheating, this technology reduces the footprint and complexity of cooling systems in AI-driven data centers and wireless networks. This advancement positions Sumitomo Electric Industries as a key player in the next-generation hardware supply chain, offering a solution for the high-frequency demands of the next decade.
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