HS 854130 Thyristors, diacs and triacs, other than photosensitive devices

Quick Answer: Thyristors, diacs, and triacs, excluding photosensitive devices, imported under HS 854130 enter the UK and EU duty-free, while the US applies a Most Favored Nation (MFN) rate of 35% for some classifications. This code specifically covers semiconductor devices that act as electronic switches, controlling current flow based on trigger signals, but it excludes those activated by light. Importers should be aware of the significant duty differential between major trading blocs. According to CustomTariffs data, careful HS code verification is crucial for accurate duty assessment and compliance.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
8541300000 0.00 % — —

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
8541300000 0.00 % — —

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
85413000 Free — —
8541300040 — — ["No."]
8541300080 — — ["No."]

Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).

Data compiled and presented by HSRates.

How to Classify This HS Code?

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What products does HS 854130 cover?

This subheading covers thyristors, diacs, and triacs, which are semiconductor devices used for controlling electrical power. Thyristors are typically used as electronic switches, while diacs and triacs are bidirectional switches. These devices are distinct from photosensitive semiconductor devices, as per the Explanatory Notes to the Harmonized System (HS) Nomenclature provided by the World Customs Organization (WCO). The USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm this scope, focusing on their switching and control functionalities in electronic circuits.

What falls outside HS 854130?

The following products are excluded from HS 854130: photosensitive semiconductor devices, such as photodiodes and phototransistors, which are classified under HS 8541.40. Additionally, complete semiconductor devices that incorporate thyristors, diacs, or triacs as components but are part of a larger assembly or module, such as power control units or integrated circuits, would be classified according to the principal function of the complete article. Simple diodes, transistors, and other semiconductor elements not fitting the specific definitions of thyristors, diacs, or triacs are also excluded.

What are common classification mistakes for HS 854130?

A common error is misclassifying semiconductor devices that exhibit some switching characteristics but do not meet the specific technical definitions of thyristors, diacs, or triacs. For instance, standard diodes or transistors might be incorrectly entered under this code. Another mistake involves classifying assemblies or modules containing these devices as if they were the individual components themselves, contrary to General Rule of Interpretation (GRI) 1 and GRI 3(b) of the Harmonized System, which prioritize the essential character of the complete product.

How should importers classify products under HS 854130?

The correct procedure for classifying products under HS 854130 involves a thorough examination of the product's technical specifications and intended function. Importers and customs brokers must consult the WCO Explanatory Notes and the specific tariff schedules of the importing country, such as the USITC HTS or the UK Trade Tariff. Verification of whether the device operates as a controlled rectifier (thyristor), a bidirectional trigger diode (diac), or a bidirectional triode thyristor (triac) is crucial. If the product is part of an assembly, the classification of the assembly must be determined.

How is the duty calculated for products under HS 854130?

A batch of 1000 units of a specific thyristor, model BT151-650R, declared at a customs value of $500 USD, would attract a US duty of $20.00. This is calculated using the Most Favored Nation (MFN) duty rate of 4.0% ad valorem, applied to the declared customs value ($500 USD × 0.04 = $20.00). This calculation is based on the rates published in the USITC Harmonized Tariff Schedule, where HS 854130 typically carries an MFN duty rate.

Which trade agreements reduce duties for HS 854130?

Several free trade agreements may reduce the applicable duty rate for HS 854130, including the United States-Mexico-Canada Agreement (USMCA). Under USMCA, originating goods can be imported duty-free. For goods originating from countries benefiting from the EU's Generalized Scheme of Preferences (GSP), preferential rates, often "Free," may apply. Documentation required to claim preference typically includes a self-certified origin statement for USMCA, or a EUR.1 movement certificate for certain EU trade agreements, depending on the origin country and the specific agreement's provisions.

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Which HS Codes Are Related?

HS 854110 HS 854121 HS 854141 HS 854160 HS 854151 HS 854143

Not the right code? Search all HS codes to find the correct tariff classification.

FAQ

What are the typical import duty rates for HS code 854130 (Thyristors, diacs and triacs)?

The import duty rates for HS code 854130 vary significantly by country and trade agreement. For example, under the U.S. Harmonized Tariff Schedule (HTS), the Most Favored Nation (MFN) duty rate is 0.00%. However, preferential rates under Free Trade Agreements (FTAs) may apply. In the European Union, the TARIC system indicates a duty rate of 3.7% ad valorem for goods from most third countries, but this can be reduced or eliminated under specific trade agreements. The UK Trade Tariff also shows varying rates, with a standard rate of 0.00% but potential for other duties depending on origin. Always consult the specific tariff schedule of the importing country for the definitive rate.

What distinguishes a thyristor, diac, or triac for customs classification under 854130 from other semiconductor devices?

HS code 854130 specifically covers thyristors, diacs, and triacs, which are types of semiconductor devices. Thyristors (including silicon-controlled rectifiers or SCRs) are bistable semiconductor devices with two stable states, triggered by a gate signal. Diacs are bidirectional trigger diodes used to trigger thyristors. Triacs are similar to thyristors but are bidirectional, allowing them to conduct current in both directions. These devices are distinguished by their specific switching characteristics and control mechanisms, differentiating them from diodes (8541.10), transistors (8541.21-8541.29), and other photosensitive semiconductor devices (8541.40). Proper classification relies on understanding the device's electrical function and construction as detailed in the WCO Explanatory Notes and national tariff schedules.

What documentation is typically required for importing thyristors, diacs, and triacs under HS 854130?

Standard import documentation for HS code 854130 includes a commercial invoice detailing the description, quantity, unit price, and total value of the goods; a packing list; and a bill of lading or air waybill. Depending on the importing country and the origin of the goods, a certificate of origin may be required to claim preferential duty rates under trade agreements. Manufacturers' specifications or datasheets that clearly identify the product as a thyristor, diac, or triac can also be beneficial for customs authorities to verify classification. Importers should verify specific requirements with the customs authority of the destination country.

How is the import duty calculated for HS 854130, and can you provide an example?

Import duty for HS code 854130 is typically calculated on an ad valorem basis, meaning it's a percentage of the declared customs value of the goods. For example, if a shipment of thyristors is valued at $10,000 USD and the applicable duty rate is 3.7% ad valorem (as might be seen under the EU TARIC for certain origins), the duty would be calculated as follows: Duty Amount = Customs Value × Duty Rate. In this case, $10,000 USD × 0.037 = $370 USD. Some countries may also apply specific duties based on weight or quantity, or a combination of ad valorem and specific duties. It is crucial to confirm the applicable duty calculation method and rate with the importing country's customs authority.

Do common trade agreements, such as USMCA or EU FTAs, offer preferential duty rates for HS code 854130?

Yes, trade agreements often provide preferential duty rates for goods classified under HS code 854130. For instance, under the United States-Mexico-Canada Agreement (USMCA), many electronic components, including thyristors, diacs, and triacs, may qualify for duty-free treatment if they meet the rules of origin. Similarly, the European Union has numerous Free Trade Agreements (FTAs) with partner countries that can reduce or eliminate duties on such goods. To benefit from these preferential rates, importers must ensure the goods originate from a qualifying country and possess the necessary proof of origin, such as a certificate of origin or origin declaration, as stipulated by the specific trade agreement.