beggars canât be choosers meaning |  beggars canât be choosers definition. The meaning of beggars canât be choosers is: The definition of beggars canât be choosers is: While traveling in Europe, Dai had to stay in a dirty hotel because he had very little money.
From Wikipedia, the free encyclopedia. A wafer, also called a slice or substrate, is a thin slice of semiconductor material, such as a crystalline silicon, used in electronics for the fabrication of integrated circuits and in photovoltaics for conventional, wafer-based solar cells.he size of wafers for photovoltaics is 100â200 mm square and the thickness is 200â300 Î¼m. In the future, 160 Î¼m will be the standard. Electronics use wafer sizes from 100â450 mm diameter. (The largest wafers made have a diameter of 450 mm but are not yet in general use.).
Test Grade - A virgin silicon wafer of lower quality than Prime, and used primarily for testing processes. SEMI indicates the bulk, surface, and physical properties required to label silicon wafers as Test Wafers. Warp - Deviation from a plane of a slice or wafer centerline containing both concave and convex regions.