High-Power Thyristor Wafer (4-inch)
4-inch unmounted silicon wafers for manufacturing high-power thyristors used in HVDC transmission systems, with thyristor-specific epitaxial layers and doping. These wafers are non-photosensitive and fall under tariff item 8541.30.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
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 the wafers are photosensitive
Photosensitive semiconductor wafers are not covered by this tariff item.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify as unmounted thyristor wafers
• Provide doping and layer specs
• Ensure compliance with any technical standards for HVDC components
Related Products under Tariff item 8541.30.00
1200V Silicon Triac Die
Unmounted silicon dice rated at 1200V for triac fabrication, essential for AC motor controls and lighting dimmers. These individual semiconductor chips are non-photosensitive and fall under tariff item 8541.30.00.
800A Thyristor Dice Sheet
A pre-diced sheet of 800A-rated thyristor dice on tape, used for high-current traction applications like railway and marine propulsion systems. These unmounted dice are non-photosensitive thyristors, classified under tariff item 8541.30.00.
BT136-600E Triac 600V 4A
A standard triac (triode for alternating current) in a TO-220 package, rated 600V and 4A, designed for low-power AC switching in home appliances like fans and heaters. It is a non-photosensitive triac, falling squarely under tariff item 8541.30.00.
BTA16-600B Triac 16A 600V
A snubberless triac rated 16A/600V in a TO-220AB package, used for industrial motor controls and heater regulation. Its non-photosensitive design and triac function place it under tariff item 8541.30.00.
DB3 DIAC 32V Bidirectional Trigger
A two-terminal DIAC semiconductor device rated at 32V, used for triggering triacs in dimmer circuits and motor soft-starters. It is a non-photosensitive diac, classified under tariff item 8541.30.00.
Fast-Recovery Triac Wafer
Unmounted wafers optimized for fast turn-off triacs used in SMPS and inverters, with recovery time specs under 1μs. These wafers are non-photosensitive and fall under tariff item 8541.30.00.