Semiconductor Diffusion Furnace
Nonelectric industrial furnace for dopant diffusion into semiconductor wafers creating device junctions, using gas phase reactions in horizontal or vertical quartz tubes. Essential for bipolar and MOS device fabrication. Falls under 8417.80.00.00 as nonelectric furnace for semiconductor processing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If multi-zone processing capability for production wafers
Advanced diffusion equipment for device fabrication specifically provided for in semiconductor chapter.
If with embedded electric heating elements
Any electric furnace function requires Chapter 85 classification.
If vertical configuration for medical sterilization fallback
Identical form but non-semiconductor use would classify as medical ovens.
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Import Tips & Compliance
• Certify quartz tube construction and gas flow systems as nonelectric heating; include dopant compatibility documentation
• Common error: classifying tube boats as separate parts excluded from this subheading
Related Products under HTS 8417.80.00.00
Czochralski Crystal Puller Furnace
A nonelectric industrial furnace using the Czochralski method to grow monocrystalline silicon boules from molten semiconductor material for subsequent wafer slicing. It maintains precise temperature gradients in a vacuum or inert gas environment to produce high-purity crystals essential for semiconductor manufacturing. Classified under 8417.80.00.00 as a specialized nonelectric furnace for industrial semiconductor processing, excluding electric heating elements.
Float Zone Crystal Growth Furnace
Nonelectric furnace employing the float zone method to purify and grow monocrystalline semiconductor rods, particularly silicon, by melting a narrow zone with RF heating in a vacuum chamber. Critical for producing ultra-high purity materials used in power semiconductors and solar cells. Falls under 8417.80.00.00 as an industrial nonelectric furnace tailored for semiconductor boule production.
Wafer Annealing Furnace
Industrial nonelectric furnace for high-temperature annealing of semiconductor wafers to relieve stresses and activate dopants after ion implantation. Uses rapid thermal processing in controlled atmospheres without electric resistance heating. Classified in 8417.80.00.00 for its role in semiconductor device fabrication processing.
Crystal Boule Grinder Furnace Enclosure
Specialized nonelectric furnace enclosure maintaining thermal stability during grinding of semiconductor crystal boules to precise diameters, as defined in statistical notes for wafer preparation equipment. Controls dust and temperature for flat grinding indicating conductivity type. HTS 8417.80.00.00 covers this industrial furnace for semiconductor boule processing.
Rapid Thermal Processing RTP Furnace
Nonelectric semiconductor furnace using lamp arrays for ultra-fast wafer heating to 1200°C in seconds for annealing and silicide formation. Critical for submicron semiconductor device fabrication preventing dopant redistribution. HTS 8417.80.00.00 for industrial nonelectric processing furnaces.
Hydrogen Bake Furnace
Nonelectric furnace for high-temperature hydrogen baking of semiconductor wafers to remove native oxides and hydrogen-passivate surface defects before epitaxial growth. Uses forming gas mixtures in controlled environment. Classified 8417.80.00.00 as industrial furnace for wafer preparation processing.