Transistor Heat Sinks
Aluminum heat sinks specifically designed for mounting on power transistors to dissipate heat during operation. Classified under 8541.90.00 as parts of semiconductor devices (transistors). Essential for preventing thermal failure in electronic circuits.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If marketed for general heat dissipation equipment
Heat exchangers not specific to semiconductors go to Chapter 84.
If generic aluminum fabricated articles
Non-specific aluminum components classified by material in Chapter 76.
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Import Tips & Compliance
• Provide thermal conductivity specs and transistor mounting diagrams to prove dedicated use
• Avoid classifying as general metal parts; include evidence of semiconductor-specific design
• Watch for aluminum content declarations under Section XV metal notes
Related Products under HTS 8541.90.00
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Printed circuit boards pre-assembled with components for driving LED arrays in lighting applications. These are parts of light-emitting diodes under HTS 8541.90.00. They regulate current and voltage for LED operation.
Photovoltaic Cell Frames
Aluminum frames specifically designed to encase photovoltaic cells in solar modules. Parts of photosensitive semiconductor devices under 8541.90.00. Provide structural support and sealing for solar panel assembly.
Piezoelectric Crystal Oscillators Housings
Metal housings designed to encase mounted piezoelectric crystals for frequency control. Parts of piezo-electric crystals under 8541.90.00. Provide hermetic sealing and vibration isolation.
Semiconductor Lead Frames
Copper alloy lead frames used for wire bonding semiconductor dies during packaging. Essential parts for diodes, transistors, and ICs under HTS 8541.90.00. Stamped with precise lead patterns for chip attachment.
Solar Cell Encapsulant Sheets
Ethylene-vinyl acetate (EVA) sheets specifically formulated for encapsulating photovoltaic cells in solar modules. Polymer parts protecting photosensitive semiconductors under 8541.90.00. Provide optical clarity and moisture barrier.
Transistor Mounting Brackets
Stamped steel brackets with hole patterns matching power transistor packages (TO-3, TO-247). Dedicated mounting parts for semiconductor transistors under HTS 8541.90.00. Enable heat transfer to chassis.