HS Code for Microcontroller

Microcontrollers are classified under HS code 8542.31 because they are defined as electronic integrated circuits that function as processors and controllers. According to the General Rules of Interpretation (GRI) and the Explanatory Notes to Chapter 85, these devices are monolithic integrated circuits where the circuit elements, such as diodes, transistors, and resistors, are created in the mass and on the surface of a semiconductor material. A microcontroller is distinguished from a simple microprocessor by the integration of additional functional units such as memory (RAM, ROM, or Flash), timers, and programmable input/output peripherals on the same substrate. This high level of integration places them firmly within 8542.31, which covers processors and controllers whether or not combined with memories, converters, logic circuits, amplifiers, or other circuits. The classification is based on the physical construction as an integrated circuit rather than the specific end-use in an appliance, vehicle, or industrial machine. These components are the 'brains' of embedded systems, and their classification remains consistent regardless of whether they are used in a simple toy or a complex automotive engine control unit.

Products Included

• 8-bit, 16-bit, and 32-bit microcontrollers (MCUs)
• System-on-Chip (SoC) devices for embedded control
• Digital Signal Controllers (DSC)
• Microprocessors with integrated on-chip memory
• Application-specific integrated circuits (ASICs) functioning as controllers

Common Misclassification

Microcontrollers are often confused with HS code 8537.10, which covers boards or panels equipped with two or more apparatus of heading 8535 or 8536 for electric control. While a microcontroller controls electricity, 8537 refers to the finished assembly (like a PLC), whereas 8542.31 refers to the individual component. It is also confused with 8541.10 for discrete diodes or transistors, but 8542 is reserved for complex integrated circuits. Additionally, some importers mistakenly use 8471.41 for computers, but a chip alone never qualifies as a computer under that heading.

FAQ

What is the HS code for Microcontroller?

The standard HS code for a microcontroller is 8542.31, which covers electronic integrated circuits specifically categorized as processors and controllers.

What is the difference between 8542 and 8541?

HS code 8541 is for discrete semiconductor devices like individual transistors or diodes, while 8542 is for integrated circuits where multiple components are combined on a single chip.