8543.90.88.45/RF Quadrupole Power Coupler/Japan

RF Quadrupole Power Coupler from Japan

Radio-frequency power coupler for injecting RF energy into quadrupole accelerators used in ion beam therapy systems. Classified under HTS 8543.90.88.45 due to its role in particle acceleration field generation within linear accelerators. Features vacuum-tight design and high-power handling up to megawatts.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Provide technical drawings showing RF waveguide integration for accelerator use; comply with FCC RF emission standards during customs; watch for misclassification as telecom equipment