Litz Copper Wire for High-Frequency Transformers from Mexico
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 — Mexico → United States
15.3%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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