SI-F80R Series Spectral-Interference Wafer Thickness Meter

Spectral-Interference Wafer Thickness Meter

Product Overview

Spectral-Interference Wafer Thickness Meter

•	Wafer thickness can be measure even if back grinding tape is affixed
•	Minimal pattern influence
•	In-line measurement is possible
•	Automatically maps the distribution of thickness for the entire wafer

With the adoption of the near-infrared SLD, thickness measurement for the wafer alone is possible even while BG tape is affixed. Even when there is strong pattern-based variation on the surface of the wafer, accurate in-line measurement is possible.

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SI-F80R Series Spectral-Interference Wafer Thickness Meter Features

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Accurately Measure

The SI-F80R Series employs a near-infrared SLD that can penetrate through Si, GaAs, SiC, InP, a-Si, and other semiconductors.

Wafer Patterns

Variations from wafer surface patterns and measurement alarms can be held to a minimum by decreasing the beam spot diameter and surface aberrations inside the spot beam.

Previous Issues

A measuring device that can solve the problems of conventional wafer measurement methods.

Measurement Principle

Explains the measurement principle that has achieved 1 nm accuracy in an easy to understand manner.

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