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SITCSection 5
U.S. imports of doped chemical elements & compounds for electronics (wafers, discs & similar forms) (SITC 59850) totaled $171.5M in April 2026, traded with 37 countries.
Importers of Doped Chemical Elements & Compounds for Electronics (Wafers, Discs & Similar Forms) paid $1.5M in duties in April 2026 — an effective duty rate of 41% on $3.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Doped Chemical Elements & Compounds for Electronics (Wafers, Discs & Similar Forms) imports of $171.5M in April 2026 ran 12% above the year-to-date monthly average of $152.9M.
Last updated: April 2026 dataIntentional doping with trace elements — such as boron, phosphorus, or arsenic — transforms semiconductor-grade silicon, germanium, and compound semiconductors into the active materials that underpin integrated circuits, photovoltaic cells, and optoelectronic devices. Products in this heading arrive as polished wafers, epitaxial discs, or similar precision-cut forms, and their specifications (dopant concentration, crystal orientation, resistivity, diameter) are tightly controlled to semiconductor fab standards. Supply chains for doped semiconductor materials are geographically concentrated and subject to export-control regimes in multiple jurisdictions, making sourcing diversification a strategic concern for US electronics manufacturers.
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Yes. Many doped semiconductor materials are controlled under the Export Administration Regulations (EAR) and equivalent regimes in supplier countries. Importers should verify whether the specific material, dopant type, and specification level trigger EAR licensing requirements or foreign export license obligations, and should work with trade compliance counsel to assess dual-use classification.
Key parameters include crystal orientation (e.g., <100> or <111>), resistivity range (which reflects dopant concentration), total thickness variation (TTV), surface roughness, and wafer diameter. These are typically governed by SEMI standards and are specified in purchase contracts; deviations can render an entire lot unusable, making pre-shipment inspection and certificate of conformance documentation critical.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| JAPAN | $53.3M | $21.9M | -$31.4M |
| TAIWAN | $52.0M | $16.3M | -$35.7M |
| KOREA, SOUTH | $16.0M | $31.6M | +$15.6M |
| SINGAPORE | $11.4M | $16.8M | +$5.4M |
| MALAYSIA | $2.8M | $15.9M | +$13.1M |
Monthly import values over time