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The commercial availability of high quality 150 mm 4H SiC wafers has aided in the growth of SiC power device fabrication. The progress of 150 mm 4H SiC wafer development at Dow Corning is reviewed. Defect densities compare well to those typical for 100 mm wafers, with even lower threading screw dislocation densities observed in 150 mm wafers. Resistivity data shows a comparable range from 0.012 – 0.025 ohm.cm, and excellent shape control is highlighted for wafer thicknesses of 350 μm and 500 μm.