United States tariff line 3818.00.00.45: Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter
Last updated
Key facts
- Tariff line
- 3818.00.00.45
- Covers
- Monocrystalline silicon wafers, doped, pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter
- Duty (MFN)
- Free
- Additional duties
- None recorded
- Restrictions
- None recorded
- Tariff
- United States
- HS subheading
- 3818.00
Summary
In the United States tariff, line 3818.00.00.45 covers monocrystalline silicon wafers, doped, pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 3818.00 in heading 38.18 (chapter 38).
What this line covers
In the United States tariff, line 3818.00.00.45 covers monocrystalline silicon wafers, doped, pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter.
Its legal text is “Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter”, read under “Monocrystalline silicon wafers, doped”.
How it is structured
It falls under HS subheading 3818.00 in heading 38.18 (chapter 38). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.
- Chapter 38
- Miscellaneous chemical products
- Heading 38.18
- Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics
- Subheading 3818.00
- Monocrystalline silicon wafers, doped
- Line 3818.00.00.45
- Pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter
Duty
Goods under this line enter free of general (MFN) duty.
The rate is published on 3818.00.00.
Other lines under 3818.00
- 3818.00.00.10Gallium arsenide wafers, doped
- 3818.00.00.20Polycrystalline silicon wafers, doped
- 3818.00.00.30Silicon carbide wafers, doped
- 3818.00.00.40Round (circular) shaped, as described in statistical note 2 to this chapter
- 3818.00.00.50Other
- 3818.00.00.91Other
In other countries
No other national tariff on border.bot has live lines under 3818.00 yet.
Frequently asked questions
What does tariff line 3818.00.00.45 cover in the United States tariff?
In the United States tariff, line 3818.00.00.45 covers monocrystalline silicon wafers, doped, pseudo-square or rectangular in shape, as described in statistical note 3 to this chapter.
What is the general (MFN) duty on 3818.00.00.45 in the United States?
Goods under this line enter free of general (MFN) duty. The rate is published on 3818.00.00.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: