Litz Copper Wire for High-Frequency Transformers from Japan
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 — 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%
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