Transformer Bobbin Assembly from Mexico
High-temperature plastic bobbins with integrated winding pins and terminals, specifically engineered for transformer coil assembly in switch-mode power supplies. Classified under HTS 8504.90.96.46 as other transformer parts due to dedicated transformer function. Provides structural support and electrical isolation for windings.
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 of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Document flammability ratings (UL94 V0/V1) and dielectric strength specifications required for transformer safety certification
• Provide evidence of exclusive transformer use through OEM specifications to prevent reclassification as general plastic parts
• Watch for minimum import quantities that trigger formal entry requirements and bonding needs