Step-by-step guide to HTS classification for electronic components — from resistors and MLCCs to microcontrollers and PCBs. Learn the HTS Schedule B structure, key Chapter 85 headings, and how to verify your classification.
The Harmonized Tariff Schedule (HTS) is a standardized numerical system used by US Customs to classify all imported goods. The HTS code determines: (1) the base MFN duty rate, (2) which additional tariffs apply (Section 301, 122, 232), and (3) statistical tracking. For electronics, the most important chapters are Chapter 84 (computers and machinery) and Chapter 85 (electrical machinery, including semiconductors, ICs, and most electronic components). The 10-digit US HTS code is more specific than the international 6-digit HS code — the last 4 digits are US-specific.
HTS Chapter 85 covers 'Electrical machinery and equipment and parts thereof.' Key subheadings for electronic components: 8541 covers discrete semiconductors (diodes at 8541.10, MOSFETs and transistors at 8541.29, LEDs at 8541.49). 8542 covers integrated circuits — 8542.31 covers processors and microcontrollers, 8542.32 covers memories (DRAM at 8542.32.0051, NAND/NOR flash at 8542.32.0071), 8542.33 covers amplifiers, 8542.39 covers other ICs. 8532 covers capacitors (MLCCs at 8532.24.0020). 8533 covers resistors (chip resistors at 8533.21.0030). 8504 covers transformers and inductors (fixed inductors at 8504.50.4000). 8534 covers bare PCBs.
Step 1: Start with the USITC DataWeb at dataweb.usitc.gov or hts.usitc.gov. Step 2: Navigate Chapter 85 → relevant heading → subheading based on your component type. Step 3: Read the 'note' and 'additional US note' sections carefully — they contain binding classification rules. Step 4: For complex or borderline products, consult CBP's CROSS database (rulings.cbp.gov) for prior binding rulings on similar products. Step 5: Use TariffTracker's part number lookup — enter any MPN and the AI classification engine returns the likely HTS code based on the component datasheet and manufacturer data. Step 6: For high-value imports, consider requesting a CBP Binding Ruling (Form 484) to get a definitive, binding classification before your first shipment.
The most common errors in electronics HTS classification: (1) Classifying an IC module under 8542 (ICs) when it should be under 8543 (other electrical machinery) — the distinction is whether the product is 'an electronic integrated circuit' per the Chapter 85 note, or a module with supporting components. (2) Classifying a complete PCBA under 8534 (bare PCBs) — a populated PCB assembly is classified by its function (e.g., 8471 for computer boards, 8542 for IC-only boards). (3) Using the 6-digit HS code instead of the 10-digit HTS code — the US adds 4 digits that affect the exact duty rate. (4) Misclassifying sensor modules — MEMS sensors may fall under 9025 (thermometers/barometers), 9027 (analytical instruments), or 8542 (ICs) depending on configuration.
If you're importing high-value electronics and are unsure of the correct HTS classification, request a CBP Binding Ruling before your first shipment. A binding ruling is issued by CBP and is legally binding on both the importer and CBP for the described merchandise. You submit a detailed description of the product, technical specifications, and your proposed classification. CBP responds (typically within 30 days) with their determination. The ruling applies to all future imports of that product. Binding rulings are public and searchable at rulings.cbp.gov — searching for similar products can often confirm your classification without needing a formal ruling.
| HTS Code | Description | MFN Rate | Examples |
|---|---|---|---|
| 8542.31.0025 | Microcontrollers and processors (ICs) | Free | STM32, ESP32, nRF52 |
| 8542.32.0051 | DRAM and SRAM memory ICs | Free | DDR4, LPDDR5, SDRAM |
| 8542.32.0071 | Flash memory ICs (NOR, NAND) | Free | W25Q128, MT29F, eMMC |
| 8542.39.0001 | Other ICs: analog, interface, power mgmt | Free | LM358, TPS54360, MAX232 |
| 8541.29.0055 | Power transistors / MOSFETs (≥1W) | Free | IRF540N, IPP60R099 |
| 8532.24.0020 | MLCCs (ceramic capacitors) | Free | GRM155R, CL10A, CGA3E |
| 8533.21.0030 | Chip resistors (thick/thin film SMD) | Free | RC0402, CRCW0402 |
| 8504.50.4000 | Fixed inductors for electronic circuits | Free | LQH31C, SRR1260 |
The General Rules of Interpretation (GRI) in the HTS provide a hierarchical framework for resolving classification disputes. GRI 1 (specific description) takes priority. If a product is specifically described by one heading and generally described by another, the specific heading governs. For ICs, Chapter 85 Note 8 provides specific classification rules. Consult a customs broker or CBP binding ruling if uncertain.
The underlying HS code structure changes every 5 years (next update: 2027). The US-specific 10-digit codes can change more frequently. CBP publishes changes in the Federal Register. TariffTracker maintains current HTS code data and flags when codes change.
Schedule B codes (for US exports) and HTS codes (for US imports) are similar but not always identical at the 10-digit level. Always use the correct 10-digit HTS code for imports and the Schedule B code for exports. The first 6 digits are harmonized and typically the same.
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