Transistor Heat Sinks from China
Aluminum heat sinks custom-machined for mounting power transistors to dissipate thermal energy. These are essential parts of semiconductor transistors under 8541.90, designed for specific thermal management in electronic circuits.
Duty Rate — China → United States
50%
Rate breakdown
9903.91.0550%Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Provide thermal specifications and transistor mounting compatibility drawings
• Avoid classifying as general heat sinks (8419) by proving dedicated semiconductor application
• Check for Section 301 tariffs on certain heat sink materials from China