HS Code 3818
Doped Chemical Elements for Electronics
HS code 3818 covers chemical elements and compounds doped for electronics, such as silicon wafers, usually in the form of discs or similar shapes.
4-digit Section VIAir
HS Code 3818 — Doped Chemical Elements for Electronics
This code covers semiconductor materials like silicon wafers that have been 'doped' with impurities to alter their electrical properties. These are the fundamental building blocks for microchips, solar cells, and transistors.
What's included
- Doped silicon wafers
- Doped germanium discs
- Gallium arsenide wafers
- Doped selenium for electronics
What's excluded
- Undoped silicon → use
2804(Chemical elements in their pure, undoped state are classified in Chapter 28.) - Polished or etched wafers → use
3818(Wafers remain here as long as they are not further worked into circuits.)
Common examples
- P-type silicon wafers
- N-type silicon discs
- Epitaxial silicon wafers
- Doped gallium nitride substrates
Frequently asked questions
Does this cover finished computer chips?
No, finished integrated circuits and microchips are classified under heading 8542. 3818 is for the raw material form.
Trade & shipping notes
- Typical duty range: 0%
- Documentation: High-tech materials often require end-use statements to ensure they are not used for restricted military applications.
- Typical shipping mode: Air
- Top exporters: Japan, Taiwan, South Korea, Germany
- Top importers: China, United States, Malaysia, Singapore
Related HS codes
Key takeaway
Zero-duty items but highly regulated under strategic trade control frameworks (Dual-Use).
Related HS codes
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