Rectifier Diode Heat Sink Assembly from China
A heat sink assembly integrated with high-power rectifier diodes, designed to dissipate heat in AC-DC static converters for welding equipment. Classified under HTS 8504.90.96.50 as it is an essential thermal management part of static rectifiers.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Provide heat dissipation ratings and diode specs in documentation to confirm static converter application
• Ensure RoHS compliance labeling for electronics parts entering the US market
• Avoid common pitfall of classifying as standalone heat sinks (8419.90); emphasize rectifier integration