Semiconductor Wafer Lapper
Wafer lappers use loose abrasive slurries to lap both sides of semiconductor wafers simultaneously, achieving critical flatness for device fabrication. HTS 8479.90.95.96 covers this wafer preparation equipment essential for semiconductor processing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If configured for metallurgical sample preparation
General lapping/polishing machines for non-semiconductor flat samples under Chapter 84.
If primarily a mechanical slurry applicator without precision fixturing
Basic mechanical surface treatment equipment lacks semiconductor wafer fixturing.
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Import Tips & Compliance
• Specify total thickness variation (TTV) capabilities (<0.5 microns typical) in technical literature
• Demonstrate double-sided lapping mechanism specific to semiconductor wafers
• Avoid misclassification by documenting slurry compatibility with silicon/gallium arsenide
Related Products under HTS 8479.90.95.96
Float Zone Crystal Grower
Float zone crystal growers employ the float zone method to produce high-purity monocrystalline semiconductor boules by zone melting without a crucible. Classified under HTS 8479.90.95.96 as semiconductor wafer manufacturing equipment part for crystal growth processes.
Silicon Ingot Grinder
Precision silicon ingot grinders shape cylindrical semiconductor boules to uniform diameter with orientation notches for wafer slicing alignment. HTS 8479.90.95.96 includes this wafer manufacturing preparation equipment.
Gallium Arsenide Wafer Slicer
Specialized wafer slicers for brittle gallium arsenide compound semiconductor boules, featuring inner-diameter diamond saws with tension control. Falls under HTS 8479.90.95.96 for compound semiconductor wafer preparation.
Crystal boule Orientation Grinder
Orientation grinders create precise flats on semiconductor boules to indicate crystal plane, doping type, and resistivity for wafer fabrication traceability. Classified under HTS 8479.90.95.96 as essential wafer prep equipment.
Precision Wafer Edge Grinder
Wafer edge grinders chamfer and profile semiconductor wafer edges to prevent chipping during handling and processing. HTS 8479.90.95.96 covers this critical wafer preparation for fabrication yield improvement.
Czochralski Crystal Puller
A Czochralski crystal puller is used to produce extremely pure monocrystalline semiconductor boules from silicon or gallium arsenide melts, from which wafers are sliced. It falls under HTS 8479.90.95.96 as a part of semiconductor manufacturing equipment for crystal growth, classified as other machines and mechanical appliances having individual functions not specified elsewhere.