HS Code for Microprocessors and Controllers
The HS Code for microprocessors and controllers is 854231. The MFN duty rate for importing to the US is Free.
| HS Code (6-digit) | 854231 |
|---|---|
| US HTS (10-digit) | 8542310000 |
| EU CN Code (8-digit) | 85423100 |
| US Duty Rate (MFN) | Free |
| EU Duty Rate (MFN) | 0% |
| Chapter | 85 |
| Heading | 8542 |
| Last Updated | 2026-05 |
Description
Electronic integrated circuits: processors and controllers
HS Code 854231 covers electronic integrated circuits for processors and controllers, which are imported duty-free into the United States.
Frequently Asked Questions
What specific packaging and shipping methods are required for HTS 854231 microprocessors and controllers to prevent electrostatic discharge (ESD) damage during transit?
Microprocessors and controllers under HTS 854231 are highly sensitive to electrostatic discharge (ESD) and must be shipped in static-shielding materials such as conductive foam, antistatic bags, or sealed containers. Carriers experienced with high-value electronics are recommended, and documentation should clearly mark the shipment with ESD warning symbols to ensure proper handling throughout the logistics chain.
What are the specific import restrictions for microprocessors and controllers (HTS 8542.31) into the United States related to entities on the Entity List?
Imports of these advanced integrated circuits into the United States are subject to strict licensing requirements under the Export Administration Regulations (EAR) if they are destined for entities on the U.S. Department of Commerce's Entity List, particularly those linked to military end-uses. Specific license requirements and restrictions apply if the microprocessors meet certain technical thresholds (e.g., performance, architecture) and are intended for entities in countries like China, Russia, or Venezuela. Importers must verify the classification, technical parameters, and end-user against the EAR and the Entity List to ensure compliance.
How does the presence of integrated memory or graphics affect the classification of a microprocessor under HTS 8542.31?
The classification of a microprocessor as a 'processor and controller' under HTS 8542.31 is based on its primary function. If memory or a graphics processing unit (GPU) is integrated on the same semiconductor die but the device's essential character is that of a Central Processing Unit (CPU), it remains in 8542.31. A separate, dedicated graphics processor unit (GPU) without CPU functions would be classified elsewhere, typically under HTS 8542.32.
Country-Specific Import Restrictions for Microprocessors
Imports of microprocessors (HTS 8542.31) under this code are generally unrestricted for most major trading partners. However, specific country-level restrictions may apply, particularly concerning military end-uses or entities on restricted party lists (e.g., the U.S. Bureau of Industry and Security's Entity List). For example, shipments to China, Russia, or other sanctioned destinations may require an export license from the U.S. Department of Commerce if the chips meet certain performance thresholds (e.g., high processing speeds or encryption capabilities). It is critical to screen all parties against current sanctions lists and verify if the specific microprocessor's technical parameters trigger any export control regulations, such as those under the U.S. Export Administration Regulations (EAR) Category 3 or 5.
Common Classification Mistakes for Microprocessors
A frequent error is classifying a monolithic integrated circuit that is not a microprocessor or controller under heading 8542. For example, a standard memory chip (e.g., DRAM, flash) belongs in 8542.32 or 8542.39, not 8542.31. Additionally, ensure the device is truly a microprocessor (CPU) or microcontroller (MCU); dedicated processing units like GPUs, NPUs, or DSPs are often classified elsewhere, such as under 8542.31 only if they incorporate a CPU core, or more commonly under 8542.31 as 'other' or in a more specific category. Always verify the device's primary function in the apparatus.