Brazil NCM · 8-digit subitem

NCM 3818.00.10 – Doped silicon for electronics

NCM 3818.00.10 (also written 38180010) is Brazil's code for doped silicon for electronics. Its first 6 digits are HS code 3818.00.

Official description of NCM 3818.00.10

PortuguêsOfficial
De silício
EnglishUnofficial translation

Of silicon

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 3818.00.10

38Chapter 18Heading 00Subheading

HS code 3818.00
Same in every country

1Item 0Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. Digits 7 and 8 are Brazil's own split of that HS code. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 38 Chemical products n.e.c. Produtos diversos das indústrias químicas.
  2. Heading 38.18 Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics Elementos químicos dopados, próprios para utilização em eletrônica, em forma de discos, wafers ou formas análogas; compostos químicos dopados, próprios para utilização em eletrônica.
  3. Subheading 3818.00 Chemical elements; doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics Elementos químicos dopados, próprios para utilização em eletrônica, em forma de discos, wafers ou formas análogas; compostos químicos dopados, próprios para utilização em eletrônica.
  4. Subitem 3818.00.10 Of silicon De silício

Other NCM codes under HS 3818.00

3818.00.90 Other doped elements and compounds, electronicsOutros

Questions about NCM 3818.00.10

What is NCM 3818.00.10?

NCM 3818.00.10 (38180010) is the Brazilian (Mercosur) code for doped silicon for electronics. Its official Portuguese description is “De silício”.

What is the HS code for NCM 3818.00.10?

HS 3818.00 (Chemical elements; doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 3818.00.10?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.