Float Zone Crystal Grower RF Coil from Japan
A radiofrequency induction coil attachment for float zone crystal growers (heading 8429 machinery) used to melt and purify silicon rods into monocrystalline boules for wafers. It mounts directly on the grower apparatus to create the molten zone. Classified under 8431.49.9020 as an other attachment for semiconductor processing machinery.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.82.2215%Section 232: derivative steel (c)(xi), product of AR/EC/SV/GT/JP/KR/LI/CH/TW/GB/EU — 15%
9903.03.060%Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Import Tips
• Provide evidence of principal use with float zone systems through technical datasheets
• Label with specific voltage/frequency matching 8429 machinery to prevent misclassification
• Avoid bulk shipments without segregation, as mixed coils may trigger general electrical parts review