Ferrite Core for Switching Power Supply from Mexico
A manganese-zinc ferrite core used in high-frequency transformers for switching power supplies in consumer electronics like laptop chargers. Classified under HTS 8504.90.96.30 as ferrite parts of static converters due to its magnetic properties optimized for power conversion applications. It enables efficient energy transfer at frequencies above 20 kHz.
Duty Rate — Mexico → United States
15%
Rate breakdown
9903.82.1015%Except as provided for in headings 9903.82.12, 9903.82.17 and 9903.85.68, derivative aluminum and steel articles with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent, as provided for in subdivision (f) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Verify ferrite composition (MnZn or NiZn) through material certification to confirm classification under ferrite subheading
• Include technical specs showing use in transformers/static converters to avoid reclassification as general inductors
• Watch for anti-dumping duties on Chinese-origin ferrites; provide country-of-origin documentation