Chapter 85 covers electric motors, generators, transformers, batteries, power control equipment, and electronic components, etc. The core characteristic is the use of electromagnetic energy, electrical energy, or electronic technology to achieve functions. This chapter includes consumer electronics, industrial electrical equipment, semiconductor devices, integrated circuits, etc., but excludes mechanical equipment (Chapter 84) or optical instruments (Chapter 90). Heading 8542 specifically refers to integrated circuits and is a fundamental classification in the electronic information industry. Heading 8542 covers integrated circuits, including monolithic integrated circuits (such as processors, memories, amplifiers) and hybrid integrated circuits (such as multi-chip modules). The key criteria for determination are: whether components are integrated on a substrate through semiconductor processes, or whether they form an inseparable functional unit through interconnection. 8542 does not include assemblies of discrete components mounted on printed circuit boards (classified under 8543 or the heading for complete machines). First 2 digits 85: Belongs to Chapter 85, representing electric motors, electrical equipment and parts thereof. Digits 3-4: 42: Heading 8542, specifically referring to integrated circuits, distinguished from 8541 (diodes, transistors and other semiconductor devices) and 8543 (other electrical equipment not elsewhere specified). Digits 5-6: 39: Subheading 854239, representing "other integrated circuits," i.e., integrated circuits not specified under subheadings 854231 (processors and controllers), 854232 (memories), 854233 (amplifiers), 854234 (other, including hybrid integrated circuits), etc. This subheading is a residual category, covering application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), power management chips, etc. Classification under 854239 rather than 854231 or 854232 is because the goods do not possess the core functions of a processor or memory. If the chip is a general-purpose processor, it should be classified under 854231; if it is a memory, under 854232; if it is an amplifier, under 854233. 854239 specifically accommodates integrated circuits with other functions, such as interface chips, clock chips, sensor signal conditioning chips, etc. Note: If the chip is a module composed of discrete devices, it may be classified under 8543.
Chapter
Chapter 85 covers electric motors, generators, transformers, batteries, power control equipment, and electronic components, etc. The core characteristic is the use of electromagnetic energy, electrical energy, or electronic technology to achieve functions. This chapter includes consumer electronics, industrial electrical equipment, semiconductor devices, integrated circuits, etc., but excludes mechanical equipment (Chapter 84) or optical instruments (Chapter 90). Heading 8542 specifically refers to integrated circuits and is a fundamental classification in the electronic information industry.
Heading
Heading 8542 covers integrated circuits, including monolithic integrated circuits (such as processors, memories, amplifiers) and hybrid integrated circuits (such as multi-chip modules). The key criteria for determination are: whether components are integrated on a substrate through semiconductor processes, or whether they form an inseparable functional unit through interconnection. 8542 does not include assemblies of discrete components mounted on printed circuit boards (classified under 8543 or the heading for complete machines).
Digit Breakdown
First 2 digits 85: Belongs to Chapter 85, representing electric motors, electrical equipment and parts thereof. Digits 3-4: 42: Heading 8542, specifically referring to integrated circuits, distinguished from 8541 (diodes, transistors and other semiconductor devices) and 8543 (other electrical equipment not elsewhere specified). Digits 5-6: 39: Subheading 854239, representing "other integrated circuits," i.e., integrated circuits not specified under subheadings 854231 (processors and controllers), 854232 (memories), 854233 (amplifiers), 854234 (other, including hybrid integrated circuits), etc. This subheading is a residual category, covering application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), power management chips, etc.
Classification Basis
Classification under 854239 rather than 854231 or 854232 is because the goods do not possess the core functions of a processor or memory. If the chip is a general-purpose processor, it should be classified under 854231; if it is a memory, under 854232; if it is an amplifier, under 854233. 854239 specifically accommodates integrated circuits with other functions, such as interface chips, clock chips, sensor signal conditioning chips, etc. Note: If the chip is a module composed of discrete devices, it may be classified under 8543.
📝 Declaration Elements
Product Name: Declare the specific name of the integrated circuit, such as "power management chip," "digital signal processor," etc., which must be consistent with its function. Purpose: Explain the application scenario of the chip, such as "used in mobile phone motherboards," "used in automotive electronic control units." Brand: Fill in the chip brand, such as TI, ADI, Huawei HiSilicon, etc. If no brand, write "no brand." Model: Fill in the specific model of the chip, such as "TPS54331," "XC7A35T." Structure: Explain the physical structure of the chip, such as "monolithic integrated circuit," "hybrid integrated circuit." Function: Describe the core function of the chip, such as "power conversion," "signal processing," "logic control." Package Type: Fill in the package type, such as QFN, BGA, SOP, etc. This affects classification but is not decisive. Whether It Contains a Processor or Memory: Clarify whether the chip has the core function of a processor or memory, used to distinguish 854231/854232. Product Name: Power Management Integrated Circuit; Purpose: Used for power management of smartphone motherboards; Brand: TI; Model: TPS65217; Structure: Monolithic Integrated Circuit; Function: Power conversion and distribution; Package Type: QFN; Whether It Contains a Processor or Memory: No. Mistakenly classifying a processor chip under 854239 when it should be under 854231. Incorrectly declaring a memory chip as another integrated circuit. Confusing hybrid integrated circuits with monolithic integrated circuits, affecting classification. Failure to provide model or function description, leading to customs queries.
Product Name
Declare the specific name of the integrated circuit, such as "power management chip," "digital signal processor," etc., which must be consistent with its function.
⚠️ Writing "integrated circuit" generically without specifying the functional type.
Purpose
Explain the application scenario of the chip, such as "used in mobile phone motherboards," "used in automotive electronic control units."
⚠️ Only writing "used in electronic equipment," which is too broad.
Brand
Fill in the chip brand, such as TI, ADI, Huawei HiSilicon, etc. If no brand, write "no brand."
⚠️ Confusing the manufacturer with the brand, or omitting it.
Model
Fill in the specific model of the chip, such as "TPS54331," "XC7A35T."
⚠️ Incomplete model or inconsistent with the actual product.
Structure
Explain the physical structure of the chip, such as "monolithic integrated circuit," "hybrid integrated circuit."
⚠️ Misreporting a multi-chip module as monolithic.
Function
Describe the core function of the chip, such as "power conversion," "signal processing," "logic control."
⚠️ Function description inconsistent with the model.
Package Type
Fill in the package type, such as QFN, BGA, SOP, etc. This affects classification but is not decisive.
⚠️ Package does not match the model.
Whether It Contains a Processor or Memory
Clarify whether the chip has the core function of a processor or memory, used to distinguish 854231/854232.
⚠️ Mistakenly reporting a processor with memory as a memory.
Example： Product Name: Power Management Integrated Circuit; Purpose: Used for power management of smartphone motherboards; Brand: TI; Model: TPS65217; Structure: Monolithic Integrated Circuit; Function: Power conversion and distribution; Package Type: QFN; Whether It Contains a Processor or Memory: No.
Common Mistakes：
Mistakenly classifying a processor chip under 854239 when it should be under 854231.
Incorrectly declaring a memory chip as another integrated circuit.
Confusing hybrid integrated circuits with monolithic integrated circuits, affecting classification.
Failure to provide model or function description, leading to customs queries.
🎯 Classification Logic
The core basis for classification is the notes to Chapter 85 and subheading notes of the Tariff. First, determine whether it is an integrated circuit: it must be integrated through semiconductor processes, or formed by interconnecting multiple components into an inseparable function. Second, classify by function: processors/controllers under 854231, memories under 854232, amplifiers under 854233, and others under 854239. If the chip is a module composed of discrete devices, it should be classified under 8543. Also refer to classification decisions of the General Administration of Customs. 854231 Processors and Controllers: 854231 specifically refers to chips with central processing or control functions, such as CPUs, MCUs; 854239 covers chips with other functions, such as power management, interface chips. 854232 Memories: 854232 covers memory chips such as DRAM, flash memory; 854239 chips do not have the core function of data storage. 854233 Amplifiers: 854233 specifically refers to signal amplification chips; 854239 chips have functions other than amplification, such as power conversion, logic control. 854370 Other Electrical Equipment: 854370 covers electrical equipment not elsewhere specified, such as sensor modules; if the chip is a packaged module, it may be classified here. 854110 Diodes: 854110 is a single diode device; 854239 is an integrated circuit integrating multiple components. Is the chip integrated through semiconductor processes? Does it have the core function of a processor or memory? Does it belong to amplifiers? Is it a module composed of discrete components? Does the model match the function?
Basis
The core basis for classification is the notes to Chapter 85 and subheading notes of the Tariff. First, determine whether it is an integrated circuit: it must be integrated through semiconductor processes, or formed by interconnecting multiple components into an inseparable function. Second, classify by function: processors/controllers under 854231, memories under 854232, amplifiers under 854233, and others under 854239. If the chip is a module composed of discrete devices, it should be classified under 8543. Also refer to classification decisions of the General Administration of Customs.
Confused Codes：
854231 - Processors and Controllers
854231 specifically refers to chips with central processing or control functions, such as CPUs, MCUs; 854239 covers chips with other functions, such as power management, interface chips.
854232 - Memories
854232 covers memory chips such as DRAM, flash memory; 854239 chips do not have the core function of data storage.
854233 - Amplifiers
854233 specifically refers to signal amplification chips; 854239 chips have functions other than amplification, such as power conversion, logic control.
854370 - Other Electrical Equipment
854370 covers electrical equipment not elsewhere specified, such as sensor modules; if the chip is a packaged module, it may be classified here.
854110 - Diodes
854110 is a single diode device; 854239 is an integrated circuit integrating multiple components.
Self-Check：
✓ Is the chip integrated through semiconductor processes?
✓ Does it have the core function of a processor or memory?
✓ Does it belong to amplifiers?
✓ Is it a module composed of discrete components?
✓ Does the model match the function?
❓ FAQ
How to determine whether a chip should be classified under 854239 or 854231? If the chip is a general-purpose processor, microcontroller, or controller with instruction execution and logic control functions, it should be classified under 854231. If the chip has dedicated functions such as power management, interface conversion, clock generation, etc., and does not have a processor core, it is classified under 854239. Refer to the functional description in the chip datasheet. Are hybrid integrated circuits always classified under 854239? Not necessarily. If a hybrid integrated circuit contains a processor or memory core, it is still classified under 854231 or 854232 according to function. Only hybrid integrated circuits with other functions are classified under 854239. Judgment should be based on the actual function of the chip. What are the consequences of filling in the wrong model during declaration? An incorrect model may lead to incorrect classification, which in turn affects tax rates and regulatory conditions. Customs may require amendment of the declaration, supplementary payment of duties, or even penalties. It is recommended to declare truthfully and retain datasheets for reference. Which code are power management chips usually classified under? Power management chips are usually classified under 854239, as their function is power conversion, distribution, and management, and they are not processors, memories, or amplifiers. However, if they integrate processor functions, they may be classified under 854231. Should FPGAs be classified under 854239? FPGAs (field-programmable gate arrays) are usually classified under 854239, as they are programmable logic devices and do not have fixed processor or memory functions. However, if the FPGA embeds a processor hard core, judgment should be based on the primary function. How to check the regulatory conditions and tax rates for 854239? You can check the latest tariff through the official website of the General Administration of Customs of China or the "Single Window" system. Enter code 854239 to view tax rates, regulatory conditions, and inspection and quarantine requirements. Tax rates may change, and the latest official publication shall prevail. How to distinguish between integrated circuit modules and integrated circuits? Integrated circuit modules are usually assemblies of multiple discrete components or chips on a substrate, forming a specific functional module, generally classified under 8543 or the heading for complete machines. An integrated circuit, however, is an integrated unit within a single package, classified under 8542. Is it necessary to provide the chip datasheet during declaration? It is recommended to attach the datasheet so that customs can verify the function, model, and classification. If customs raises questions, the datasheet is an important supporting document. The absence of a datasheet may lead to classification disputes.
Q: How to determine whether a chip should be classified under 854239 or 854231?
A: If the chip is a general-purpose processor, microcontroller, or controller with instruction execution and logic control functions, it should be classified under 854231. If the chip has dedicated functions such as power management, interface conversion, clock generation, etc., and does not have a processor core, it is classified under 854239. Refer to the functional description in the chip datasheet.
Q: Are hybrid integrated circuits always classified under 854239?
A: Not necessarily. If a hybrid integrated circuit contains a processor or memory core, it is still classified under 854231 or 854232 according to function. Only hybrid integrated circuits with other functions are classified under 854239. Judgment should be based on the actual function of the chip.
Q: What are the consequences of filling in the wrong model during declaration?
A: An incorrect model may lead to incorrect classification, which in turn affects tax rates and regulatory conditions. Customs may require amendment of the declaration, supplementary payment of duties, or even penalties. It is recommended to declare truthfully and retain datasheets for reference.
Q: Which code are power management chips usually classified under?
A: Power management chips are usually classified under 854239, as their function is power conversion, distribution, and management, and they are not processors, memories, or amplifiers. However, if they integrate processor functions, they may be classified under 854231.
Q: Should FPGAs be classified under 854239?
A: FPGAs (field-programmable gate arrays) are usually classified under 854239, as they are programmable logic devices and do not have fixed processor or memory functions. However, if the FPGA embeds a processor hard core, judgment should be based on the primary function.
Q: How to check the regulatory conditions and tax rates for 854239?
A: You can check the latest tariff through the official website of the General Administration of Customs of China or the "Single Window" system. Enter code 854239 to view tax rates, regulatory conditions, and inspection and quarantine requirements. Tax rates may change, and the latest official publication shall prevail.
Q: How to distinguish between integrated circuit modules and integrated circuits?
A: Integrated circuit modules are usually assemblies of multiple discrete components or chips on a substrate, forming a specific functional module, generally classified under 8543 or the heading for complete machines. An integrated circuit, however, is an integrated unit within a single package, classified under 8542.
Q: Is it necessary to provide the chip datasheet during declaration?
A: It is recommended to attach the datasheet so that customs can verify the function, model, and classification. If customs raises questions, the datasheet is an important supporting document. The absence of a datasheet may lead to classification disputes.
⚠️ Disclaimer: HS code classification, declaration elements, tariff rates and regulatory conditions on this page are for reference only and do not constitute legal advice on customs classification. Tariff rates and regulations are subject to change; the latest announcements from the General Administration of Customs and on-site determinations shall prevail. Please consult professional customs brokers or customs authorities before import/export.