Crystal Puller RF Heating Coil from Canada
Radio frequency induction coil for melting silicon in float zone crystal pullers under 8425. Part in 8431.10.0090 provides zone-refined purity. Water-cooled copper construction for high-power operation.
Duty Rate — Canada → United States
25%
Rate breakdown
9903.94.0525%Except for products described in headings 9903.94.06, 9903.94.32, 9903.94.33, 9903.94.42, 9903.94.43, 9903.94.44, 9903.94.45, 9903.94.52, 9903.94.53, 9903.94.54, 9903.94.55, 9903.94.62, 9903.94.63, 9903.94.66 and 9903.94.67, automobile parts, as provided for in subdivision (g) of U.S. note 33 to this subchapter
9903.74.110%Articles as provided for in subdivision (l) of U.S. note 38 to this subchapter.
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Document RF frequency (typically 450kHz) and power rating; include cooling channel specs
• Pitfall: classification as transformer under 8504