Transistor Heat Sinks
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If generic cooling machinery parts
General heat exchangers use 8419; semiconductor-specific excluded.
If aluminum articles without specific design
Plain aluminum shapes fall under Chapter 76.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 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
Related Products under HTS 8541.90.00.80
LED Driver Circuit Boards
Printed circuit boards (PCBs) pre-assembled with components for driving light-emitting diodes in displays and lighting. These are parts of LED semiconductor devices under 8541.90, providing essential electrical control functions. Not complete LEDs but integral subassemblies.
Photovoltaic Cell Test Probes
Precision probes used to test electrical characteristics of individual photovoltaic (solar) cells during quality control. Classified as parts of photosensitive semiconductor devices under 8541.90 for their dedicated testing role in solar cell production.
Piezoelectric Crystal Holders
Precision metal housings that encase mounted piezo-electric crystals for frequency control in oscillators. These are parts thereof under 8541.90, providing hermetic sealing and electrical connections for crystal stability.
Solar Cell Encapsulant Sheets
Ethylene-vinyl acetate (EVA) sheets used to encapsulate photosensitive photovoltaic cells, providing protection and electrical insulation. Parts of photovoltaic semiconductor devices under 8541.90 for solar module assembly.
Semiconductor Lead Frames
Copper alloy frames that hold semiconductor dice during wire bonding and packaging. Essential parts under 8541.90 for creating packaged semiconductor devices like ICs and transistors.
LED Phosphor Coating Equipment Parts
Nozzles and dispensing heads for applying phosphor coatings on LED chips during manufacturing. Specialized parts of light-emitting diode semiconductors under 8541.90.