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HTS 3818Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics

Product or HTS code

Rate lines7

Code	Description	General	Special	Column 2	Units	Calculate
3818.00.00	3818.00.00Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronicsGeneral Free · Column 2 25%	Free		25%
3818.00.00.10	3818.00.00.10Gallium arsenide wafers, dopedGeneral Free · Column 2 25% · kg	Free		25%	kg
3818.00.00.20	3818.00.00.20Polycrystalline silicon wafers, dopedGeneral Free · Column 2 25% · kg	Free		25%	kg
3818.00.00.30	3818.00.00.30Silicon carbide wafers, dopedGeneral Free · Column 2 25% · kg	Free		25%	kg
	Monocrystalline silicon wafers, dopedGeneral Free · Column 2 25%	Free		25%
3818.00.00.40	3818.00.00.40Round (circular) shaped, as described in statistical note 2 to this chapterGeneral Free · Column 2 25% · kg	Free		25%	kg
3818.00.00.45	3818.00.00.45Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapterGeneral Free · Column 2 25% · kg	Free		25%	kg
3818.00.00.50	3818.00.00.50OtherGeneral Free · Column 2 25% · kg	Free		25%	kg
3818.00.00.91	3818.00.00.91OtherGeneral Free · Column 2 25% · kg	Free		25%	kg

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Japan41.4% of imports	Taiwan14.96% of imports	South Korea13.33% of imports	Germany7.19% of imports	China4.84% of imports	France4.44% of imports	Singapore3.1% of imports	Malaysia2.46% of imports	Italy2% of imports	Finland1.28% of imports
3818.00.00.10Gallium arsenide wafers, doped	0%	0%	0%	0%	50%9903.91.05	0%	0%	0%	0%	0%
3818.00.00.20Polycrystalline silicon wafers, doped	0%	0%	0%	0%	50%9903.91.05	0%	0%	0%	0%	0%
3818.00.00.30Silicon carbide wafers, doped	0%	0%	0%	0%	50%9903.91.05	0%	0%	0%	0%	0%
3818.00.00.40Round (circular) shaped, as described in statistical note 2 to this chapter	0%	0%	0%	0%	50%9903.91.05	0%	0%	0%	0%	0%
3818.00.00.45Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter	0%	0%	0%	0%	50%9903.91.05	0%	0%	0%	0%	0%
3818.00.00.50Other	0%	0%	0%	0%	50%9903.91.05	0%	0%	0%	0%	0%
3818.00.00.91Other	0%	0%	0%	0%	50%9903.91.05	0%	0%	0%	0%	0%

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).