2-1.Wafer Diameter

The linear distance across the surface of a circular slice which contains the slice center and excludes any flats or other peripheral fiduciary areas. Standard silicon wafer diameters are: 25.4mm (1″), 50.4mm (2″), 76.2mm (3″), 100mm (4″), 125mm(5″), 150mm (6″), 200mm (8″), and 300mm (12″).

The linear dimension across the surface of a wafer. Measurement is performed manually with ANSI certied digital calipers on each individual wafer.


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