Wafer Thickness Gauging Sensor Mount
Aluminum precision mount that positions capacitive thickness sensors on wafer grinders (8429) for in-situ monitoring during semiconductor wafer thinning to ±0.5 micron tolerance. 8431.49.9020 attachment.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mounts primarily for measuring/testing instruments
Profile project instrument parts take precedence.
If generic aluminum mount without sensor interface precision
Aluminum fabrications default to chapter 76.
If for general precision measuring machines
Non-semiconductor grinder parts alternative.
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Import Tips & Compliance
• Sensor repeatability (±0.1μm) and grinder model compatibility docs
• Distinguish from chapter 90 instruments via mounting function
• Standalone sensor mounts may go to 9031
Related Products under HTS 8431.49.90.20
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Wafer Polishing Head Vacuum Chuck
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