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Wafer thickness affects mechanical strength, thermal behavior, electrical resistance, material removal, handling stability, and process compatibility. The correct thickness depends on wafer diameter, device architecture, equipment limits, backside processing, bonding method, and final application.

Glass wafer thickness affects mechanical strength, optical path length, thermal response, bonding behavior, via processing, and equipment compatibility. A wafer that is too thin may bend or break during handling, while excessive thickness can increase machining time, optical absorption, and through-hole aspect ratio.

Wafer thickness directly affects mechanical stability, lithography alignment, and layer uniformity in semiconductor fabrication. As device structures continue to shrink, tolerance windows for wafer thickness have become increasingly strict. In advanced processes, variation is often controlled within a few micrometers or less.