3818.00.00.45
Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter
Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics: Monocrystalline silicon wafers, doped
Data provenance: Rates from HTS Revision 16 (Aug 15, 2026); trade measures verified against CBP CSMS and Federal Register notices through Aug 15, 2026.
Duty rates
No active duty rates published for this code.
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.90.08
35%
ActiveArticles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter
Applies to origin: RU, BY
Effective from April 5, 2025
Related CBP rulings
The tariff classification of Doped Chemical Compounds from Russia
The products concerned are referred to as a P-type Antimony ingot and an N-type Bismuth ingots (P = electrically positive and N = electrically negative). The official/proper name for the P-type ingot is Bismuth Antimony Telluride (Bi-Sb-Te)
The tariff classification of indium phosphide gallium arsenide semiconductor wafers from an unspecified country
The merchandise subject to this ruling is referred to as indium phosphide gallium arsenide semiconductor wafers. They consist of chemical elements that have been doped with silicon and zinc. The wafers have also been metalized and etched in
The tariff classification of Tellurium, Selenium, Undoped Indium Phosphide, Undoped Cadmium Telluride, Doped Indium Phosphide and Doped Cadmium Telluride, Cadmium Metal (unwrought) and Indium Metal (unwrought) from Japan
The applicable subheading for the Tellurium will be 2804.50.0020, Harmonized Tariff Schedule of the United States (HTS), which provides for Hydrogen, rare gases and other nonmetals: Boron; tellurium: Tellurium. The rate of duty will be Free
The tariff classification of unpolished silicon wafers from China
The tariff classification of unpolished silicon wafers from China
The tariff classification of Galliun Arsenide Wafers fromGermany.
The tariff classification of Galliun Arsenide Wafers fromGermany.
The tariff classification of Gallium Arsenide (GaAs) andIndium Antimonide (Insb) from Japan.
The tariff classification of Gallium Arsenide (GaAs) andIndium Antimonide (Insb) from Japan.
The tariff classification of gallium arsenide wafers andcrystals from Poland
The tariff classification of gallium arsenide wafers andcrystals from Poland
The tariff classification of mercury-cadmium-telluridewafers from France
The tariff classification of mercury-cadmium-telluridewafers from France
Other codes in heading 3818
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 3818.00.00.45 from each major US trading partner.
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