No. Heading 3818 requires that the element or compound be doped—that is, intentionally modified with impurities to alter its electrical conductivity. Undoped silicon, even in wafer or disc form, classifies in the chapter covering inorganic chemicals or silicon as a chemical element, not here.

The heading specifies discs, wafers, or similar forms, which are the flat, polished substrates used directly in photolithographic fabrication. Doped semiconductor material in ingot, rod, or granular form does not meet the form requirement and would be classified under a different heading. Importers should confirm that the product has been sliced and polished to wafer specification before applying 3818.