HS Code for Small Signal Transistors
The HS Code for small signal transistors is 854121. The MFN duty rate for importing to the US is Free.
| HS Code (6-digit) | 854121 |
|---|---|
| US HTS (10-digit) | 8541210000 |
| EU CN Code (8-digit) | 85412100 |
| US Duty Rate (MFN) | Free |
| EU Duty Rate (MFN) | 0% |
| Chapter | 85 |
| Heading | 8541 |
| Last Updated | 2026-05 |
Description
Transistors, other than photosensitive, with a dissipation rate of less than 1W
HS Code 854121 covers small signal transistors with a dissipation rate below 1W and a US MFN duty rate of Free.
Frequently Asked Questions
What specific packaging requirements apply when shipping small signal transistors (HTS 854121) to prevent electrostatic discharge damage?
Small signal transistors are highly sensitive to electrostatic discharge (ESD) and must be shipped in conductive or anti-static packaging, such as metalized shielding bags or foam. The outer packaging must be clearly marked with ESD warning symbols (e.g., a black hand in a yellow triangle) to ensure proper handling throughout the logistics chain. Failure to use compliant ESD packaging can result in damaged, non-functional goods upon arrival.
What are the specific anti-dumping duties or import restrictions for small signal transistors (HTS 854121) entering the United States?
The United States currently maintains anti-dumping duty orders on certain small signal transistors from China. Importers must check the specific case numbers (e.g., A-570-601) with U.S. Customs and Border Protection (CBP) and may be required to pay cash deposits for estimated duties at the time of entry. The applicable rates can vary by Chinese manufacturer and are subject to periodic review by the Department of Commerce.
How does the doping material of the semiconductor (e.g., silicon vs. germanium) affect the classification of small signal transistors under HTS 8541.21?
The specific semiconductor material (e.g., silicon, germanium, gallium arsenide) does not change the classification of a small signal transistor under HTS 8541.21, as this heading is defined by function and power dissipation (<1W). However, the material composition is critical for correctly applying any applicable duty suspensions or Free Trade Agreement rules of origin, which may have specific material sourcing requirements.
Country-Specific Import Restrictions for Small Signal Transistors
Certain countries maintain specific restrictions on imports of transistors, particularly those with potential dual-use applications in military or telecommunications infrastructure. For example, China requires an import license for certain radio frequency power transistors, and shipments may be subject to additional scrutiny from the Ministry of Industry and Information Technology (MIIT). Importers should consult the local import control lists of the destination country, such as India's Directorate General of Foreign Trade (DGFT) policy or Brazil's ANATEL for telecommunications components, to verify if HTS 8541.21 items require special permits. Failure to obtain necessary licenses can result in customs holds or seizure.
Common Classification Mistakes for Small Signal Transistors (8541.21)
A frequent error is misclassifying small signal transistors under code 8541.29 (other transistors) or 8541.40 (photosensitive devices). Ensure the transistor is not a power handling type (often 8541.29) and has a dissipation rating typically below 1 watt. Another mistake is incorrectly classifying RF transistors designed for signal switching/amplification here; they belong to 8541.21 if they meet the power criteria, not in 8541.29 by default. Always verify the device's primary function and technical specifications against the heading notes.
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