Litz Copper Wire for High-Frequency Transformers from China
Multi-strand Litz copper wire with individual enamel insulation to reduce skin effect in high-frequency applications. Under HTS 8544.49.30 as specialized insulated copper conductor ≤1,000V. Used in switch-mode power supplies and RF inductors.
Duty Rate — China → United States
40.3%
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
• Describe Litz construction (number of strands, individual enamel coating) in detail
• Provide frequency range documentation justifying Litz wire design
• Avoid classification as 'fabricated wire' if insulation is primary feature