Brazil NCM · 8-digit code

NCM 8540.79.00 – Other microwave tubes, e.g. klystrons

NCM 8540.79.00 (also written 85407900) is Brazil's code for other microwave tubes, e.g. klystrons. Its first 6 digits are HS code 8540.79.

Official description of NCM 8540.79.00

PortuguêsOfficial
Outros
EnglishUnofficial translation

Tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes

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

How to read NCM 8540.79.00

85Chapter 40Heading 79Subheading

HS code 8540.79
Same in every country

0Item 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. The last two digits are 00 because Brazil does not split this HS code further. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 85 Electrical machinery and equipment and parts thereof; sound recorders and reproducers; television image and sound recorders and reproducers, parts and accessories of such articles Máquinas, aparelhos e materiais elétricos, e suas partes; aparelhos de gravação ou de reprodução de som, aparelhos de gravação ou de reprodução de imagens e de som em televisão, e suas partes e acessórios.
  2. Heading 85.40 Thermionic, cold cathode or photo-cathode valves and tubes (e.g. vacuum, vapour, gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray and television camera tubes) Lâmpadas, tubos e válvulas, eletrônicos, de cátodo quente, cátodo frio ou fotocátodo (por exemplo, lâmpadas, tubos e válvulas, de vácuo, de vapor ou de gás, ampolas retificadoras de vapor de mercúrio, tubos catódicos, tubos e válvulas para câmeras de televisão), exceto os da posição 85.39.
  3. Group 8540.7 Microwave tubes (for example, magnetrons, klystrons, travelling wave tubes, carcinotrons), excluding grid-controlled tubes: Tubos para micro-ondas (por exemplo, magnétrons, clístrons, guias (tubos) de ondas progressivas, carcinotrons), excluindo os tubos comandados por grade (grelha):
  4. Subheading 8540.79 Tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes
  5. Subitem 8540.79.00 Tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes Outros

Questions about NCM 8540.79.00

What is NCM 8540.79.00?

NCM 8540.79.00 (85407900) is the Brazilian (Mercosur) code for other microwave tubes, e.g. klystrons. Its official Portuguese description is “Outros”.

What is the HS code for NCM 8540.79.00?

HS 8540.79 (Tubes; microwave (for example klystrons, travelling wave tubes, carlinotrons), excluding magnetrons and grid-controlled tubes). 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 8540.79.00?

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.