Semiconductor Lapping Machine Temperature Control Units
Integrated chiller/heater modules for wafer lapping equipment that maintain slurry temperature within 0.1°C tolerances during semiconductor wafer surface preparation. Directly referenced in statistical note (a)(ii)(C) as wafer grinders/lappers/polishers. Classifies as 8419.90.95 parts for temperature treatment.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other semiconductor manufacturing machines
Temperature control not principal function moves to general semiconductor machinery.
If standalone refrigerating equipment
Complete refrigeration units (not parts) classified by cooling function regardless of end-use.
If primarily automatic temperature controllers
Parts of Chapter 90 control instruments, not temperature treatment machinery.
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Import Tips & Compliance
• Provide temperature uniformity specs (ASTM standards) proving semiconductor precision requirements
• Reference end-use in 200mm/300mm wafer fabs to qualify for manufacturing duty programs
• Avoid reclassification by documenting integration with lapping plate chillers
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Wafer Grinding Machine Coolant Circulation Pump
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Crystal Boule Grinder Spindle Heating Elements
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Wafer Polishing Slurry Temperature Conditioners
Heat exchanger units conditioning chemical-mechanical polishing slurry temperature for semiconductor wafer polishers. Ensures consistent material removal rates per statistical note (a)(ii)(C). Parts of 8419 temperature treatment equipment.
Czochralski Puller Crucible Heating Windings
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