HS code · 6-digit subheading
HS Code 8523.59 – Semiconductor media; other than smart cards, whether or not recorded, excluding products of Chapter 37
HS code 8523.59 is the 6-digit subheading for semiconductor media, other than smart cards, whether or not recorded, excluding products of Chapter 37. It is used for NOR flash memory chips (unmounted), NAND flash memory chips (unmounted), EEPROM chips, OTP (One-Time Programmable) memory chips and specialized embedded memory modules.
What HS 8523.59 covers
This HS code serves as a residual category for semiconductor media that are not specifically classified as solid-state non-volatile storage devices (852351) or smart cards (852352). It covers a variety of specialized semiconductor-based recording media, whether blank or pre-recorded, that might not fit neatly into the more common categories. This could include certain types of embedded memory modules, specialized programmable logic devices used for data storage, or other unique semiconductor-based data carriers. Importers and exporters in this niche often include manufacturers of specialized industrial electronics, automotive systems, and advanced computing hardware, seeking specific memory solutions for their products. Key aspects of trade involve highly technical specifications, custom manufacturing, and integration into complex systems. This category highlights the diverse and evolving landscape of semiconductor technology beyond mainstream consumer storage.
- Covers
- NOR flash memory chips (unmounted)
- NAND flash memory chips (unmounted)
- EEPROM chips
- OTP (One-Time Programmable) memory chips
- Specialized embedded memory modules
- FPGA configuration memory
- Mask ROM chips
- Examples
- Micron NOR Flash
- Samsung NAND Flash die
- STMicroelectronics EEPROM
- Cypress PSoC memory
- Renesas embedded flash
Codes often confused with 8523.59
Common mistake. This code is a "basket" category for semiconductor media not covered by 852351 (Solid-state storage devices) or 852352 (Smart cards), and care must be taken to ensure the product doesn't fit those more specific codes.
Top exporters and importers of HS code 852359, 2025
In 2025, the largest exporter of HS code 852359 in UN Comtrade data was Thailand, with 18% of world exports; the largest importer in UN Comtrade data was Singapore, with 11% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Thailand $226M 18% of world exports
- 2 Malaysia $191M 15% of world exports
- 3 Singapore $181M 14% of world exports
World total: $1.3B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Singapore $146M 11% of world imports
- 2 United States $107M 8.1% of world imports
- 3 Netherlands $85M 6.5% of world imports
World total: $1.3B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 8523.59
Brazil does not split HS 8523.59: its NCM code is 8523.59.00.
All Brazil NCM codes in heading 85.23 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 8523.59
What is HS code 852359?
HS code 852359 is a 6-digit subheading in the Harmonized System that covers: Semiconductor media; other than smart cards, whether or not recorded, excluding products of Chapter 37. This HS code serves as a residual category for semiconductor media that are not specifically classified as solid-state non-volatile storage devices (852351) or smart cards (852352). It covers a variety of specialized semiconductor-based recording media, whether blank or pre-recorded, that might not fit neatly into the more common categories. This could include certain types of embedded memory modules, specialized programmable logic devices used for data storage, or other unique semiconductor-based data carriers. Importers and exporters in this niche often include manufacturers of specialized industrial electronics, automotive systems, and advanced computing hardware, seeking specific memory solutions for their products. Key aspects of trade involve highly technical specifications, custom manufacturing, and integration into complex systems. This category highlights the diverse and evolving landscape of semiconductor technology beyond mainstream consumer storage.
What products fall under HS code 852359?
NOR flash memory chips (unmounted), NAND flash memory chips (unmounted), EEPROM chips, OTP (One-Time Programmable) memory chips, Specialized embedded memory modules, FPGA configuration memory, Mask ROM chips
What are common misclassifications for HS code 852359?
This code is a "basket" category for semiconductor media not covered by 852351 (Solid-state storage devices) or 852352 (Smart cards), and care must be taken to ensure the product doesn't fit those more specific codes.
Which countries are the top exporters of goods under HS code 852359?
In 2025, the top exporters of HS code 852359 in UN Comtrade data were Thailand ($226M, 18% of world exports), Malaysia ($191M) and Singapore ($181M). World exports came to about $1.3B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 852359?
In 2025, the top importers of HS code 852359 in UN Comtrade data were Singapore ($146M, 11% of world imports), the United States ($107M) and the Netherlands ($85M). World imports came to about $1.3B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 852359 structured?
HS code 852359 is a 6-digit subheading under the Harmonized System. The first 2 digits (85) identify the chapter, digits 3-4 (23) identify the heading, and digits 5-6 (59) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 852359?
In Brazil, HS code 852359 is NCM 8523.59.00. The last two digits are 00 because Brazil does not split this HS code further.