AMAT 0020-21755
Product Name: Focus Ring Assembly Product Introduction: A component placed around the perimeter of the wafer on the pedestal. It confines the plasma to the wafer area and protects the edge of the wafer and the chamber from deposition/etch. Technical Specifications:
- Material: Silicon, Silicon Carbide, or Quartz.
- Inner Diameter: Matches wafer diameter (e.g., 300mm) with a tight tolerance (±0.1mm).

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