About 500 can be cut.
igbt is a simple circuit, but it belongs to the power electronics chip, igbt design needs to ensure that the opening and closing loss, short-circuit resistance and on-voltage drop are in a balanced state, and parameter adjustment optimization is very special and complex, and IGBT on the back process and thinning process technology requirements are very high. The igbt is the size of a fingernail, and the size of a 5-nanometer chip, so about 500 can be cut out of a 12-inch wafer. However, the igbt process requirements are not high, 90 nanometers are relatively high-end and fast, so they are usually 8-inch, 6-inch wafers, and 12-inch wafers will not be used.