Float Zone Crystal Grower RF Heating Coil from Mexico
Radio frequency induction coil for float zone crystal growers producing ultra-pure silicon ingots without crucibles. Enables zone refining for high-resistivity wafers. Counts as parts of semiconductor crystal pullers/growers in 8442.40.00.00.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include RF frequency specs (typically 300-450 kHz) and coil turns ratio for technical validation
• Water-cooling channel integrity must be certified for safe customs clearance
• Avoid bulk copper wire imports; classify only as complete semiconductor assemblies