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3818.00.00.20

Polycrystalline silicon wafers, doped

Classification path

  1. Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics
  2. Polycrystalline silicon wafers, doped

Rates of duty

General (MFN)
Free
Column 2Cuba, North Korea, Russia, Belarus
25%
Unit of quantity
kg

Related lines in heading 3818

About 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

Heading 3818 covers doped chemical elements and doped chemical compounds for electronics when put up as discs, wafers or similar forms. The lines split first by material and then, for monocrystalline silicon, by wafer shape. The general (MFN) rate is Free for all listed lines.

Full guide to heading 3818

Products in this heading

  • Doped gallium arsenide wafers
  • Doped polycrystalline silicon wafers
  • Doped silicon carbide wafers
  • Round doped monocrystalline silicon wafers
  • Pseudo-square doped monocrystalline silicon wafers
  • Rectangular doped monocrystalline silicon wafers
  • Other doped element or compound wafers

Frequently asked questions

What is the HTS code for doped gallium arsenide wafers?

Use 3818.00.00.10. The general (MFN) rate is Free.

What is the duty on doped silicon carbide wafers?

The listed line is 3818.00.00.30, and its general (MFN) rate is Free.

How do I classify doped monocrystalline silicon wafers?

Classify by shape: round wafers fall under 3818.00.00.40 with a general (MFN) rate of Free, and pseudo-square or rectangular wafers fall under 3818.00.00.45 with a general (MFN) rate of Free.

Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.

HTS 3818.00.00.20: Polycrystalline silicon wafers, doped, Free duty | HTSBase