Ferrite Core Blanks for Transformers from Mexico
Unmagnetized ferrite cores made from manganese-zinc or nickel-zinc materials, designed for permanent magnet use in transformer and inductor applications after magnetization. These soft magnetic blanks fit 'articles intended to become permanent magnets' in 8505.90.75.01.
Duty Rate — Mexico → United States
11.3%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide engineering specs showing intended magnetization and end-use to distinguish from finished cores
• Include heat treatment certifications, as ferrite properties depend on sintering processes
• Label clearly as 'unmagnetized blanks' to prevent confusion with ready-to-use transformer parts