Wafers on some semiconductor processes are 0.3m in diameter. You could not practically handle a 1um thick wafer 0.3m in diameter without shattering it. 0.75mm i

Wafers on some semiconductor processes are 0.3m in diameter. You could not practically handle a 1um thick wafer 0.3m in diameter without shattering it. 0.75mm is a reasonable overall wafer thickness.