HTS heading 3818
Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics — 8 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 3818.00.00 | Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics + Ch. 99 | Free | — |
| 3818.00.00.10 | Gallium arsenide wafers, doped + Ch. 99 | Free (inherited from 3818.00.00) | kg |
| 3818.00.00.20 | Polycrystalline silicon wafers, doped + Ch. 99 | Free (inherited from 3818.00.00) | kg |
| 3818.00.00.30 | Silicon carbide wafers, doped + Ch. 99 | Free (inherited from 3818.00.00) | kg |
| 3818.00.00.40 | Round (circular) shaped, as described in statistical note 2 to this chapter + Ch. 99 | Free (inherited from 3818.00.00) | kg |
| 3818.00.00.45 | Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter + Ch. 99 | Free (inherited from 3818.00.00) | kg |
| 3818.00.00.50 | Other + Ch. 99 | Free (inherited from 3818.00.00) | kg |
| 3818.00.00.91 | Other + Ch. 99 | Free (inherited from 3818.00.00) | kg |
7 of these lines state no rate of their own and inherit one from the line above, which is how the schedule is read. Each says which line it came from.
Additional duties may apply
8 lines here reference Chapter 99, where Section 301, Section 232 and other additional duties live. Those are charged on top of the general rate and depend on where the goods were made. What those provisions are.
Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.