Sumitomo Chemical starts mass production of 4-inch InP wafers for AI data centers

DIGITIMESSeptember 4, 2026en

Sumitomo Chemical has started mass production and sales of indium phosphide (InP) epitaxial wafers, a core material for optical semiconductors used in next-generation data centers and high-speed networks. The move could help ease power and data bottlenecks facing AI infrastructure worldwide, as demand rises for faster, more efficient computing and communications.

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