HS Code for Doped silicon

Doped silicon is classified under HS code 3818.00. This classification is designated for chemical elements that have been doped for use in electronics, provided they are in the form of discs, wafers, or similar shapes. Doping is the process of intentionally introducing impurities into an extremely pure semiconductor to change its electrical properties. Under the Harmonized System, pure silicon (containing at least 99.99% by weight of silicon) is classified in Chapter 28 (specifically 2804.61). However, once the silicon is 'doped' with elements like boron, phosphorus, or arsenic to create p-type or n-type semiconductors for electronic applications, it is moved to Chapter 38, which covers miscellaneous chemical products. This classification follows GRI 1 and the specific notes for Chapter 38, which prioritize the functional application of the doped element in electronics over its status as a pure chemical element. The physical form—usually a thin wafer or disc—is also a requirement for this specific heading.

Products Included

• Doped silicon wafers for semiconductor fabrication
• Doped silicon discs for electronic circuits
• Doped germanium wafers
• Doped selenium for electronic use
• Chemical compounds doped for electronics in wafer form

Common Misclassification

The most common misclassification occurs with HS code 2804.61, which is for pure, undoped silicon. Importers often confuse the two because the base material is the same. Another common error is using HS code 8541.10, which is for finished diodes or transistors. Doped silicon under 3818.00 is a raw material or intermediate substrate, not a finished electronic component with a specific circuit function.

FAQ

What is the HS code for Doped silicon?

The HS code for doped silicon in the form of wafers or discs for electronic use is 3818.00.

Is undoped silicon wafer classified here?

No, undoped silicon wafers, even if polished, are generally classified under 2804.61 if they have not been doped with chemical impurities for electronic functionality.