Infineon to launch world’s first high-volume 300 mm GaN chip facility - Power Peak Digest

Infineon's 300mm GaN fab is not another production line—it is compound semiconductors breaching the scale-economics threshold for the first time. A decade of 150-200mm workshop economics kept GaN perpetually undercut by silicon MOSFETs. Twelve-inch wafers quadruple die output; depreciation dilution drags GaN BOM costs into SiC territory. That is the strategic kill. Upstream, MOCVD equipment makers and substrate suppliers face repriced bargaining power. Downstream, 800V automotive and AI data-center power architectures hit a design-window switch within 18 months. Risk: 300mm GaN epitaxy uniformity remains an unsolved engineering problem. A 24-month yield ramp will burn cash flow. US-Japan export controls on critical equipment add non-trivial compliance overhead. Competitive dynamics fracture. Wolfspeed's 200mm SiC line just launched; Infineon skipping directly to 300mm GaN is a cost-curve head start. Navitas, EPC, and other GaN startups face a binary: get acquired or get crushed. Sanan and Silan must follow within 12 months or lose automotive bidding leverage. 12-24 month tail effect: GaN's sub-650V power share jumps from under 5% to 15-20%, eroding SiC's moat from below. Power semiconductors shift from linear Si-to-SiC substitution to a three-way GaN/SiC/Si equilibrium.