💾 Data Updated: Latest version • Last updated: December 09, 2025

8543.20.00.00 - Signal generators 🖩

Details

FieldValue
Unit of QuantityNo.
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)N/A
Column 2 Rate of Duty35%
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

Category 8543.20.00.00 specifically classifies signal generators, which are electronic devices designed to produce electrical signals of specific waveforms, frequencies, and amplitudes. These signals are crucial for testing, calibrating, and troubleshooting electronic equipment and systems. Examples include function generators, arbitrary waveform generators, and RF signal generators used across various industries such as telecommunications, research and development, and manufacturing.

This category is distinct from its sibling, 8543.10.00.00 (Particle accelerators), which are used for accelerating subatomic particles. It also differs from 8543.30 (Machines and apparatus for electroplating, electrolysis or electrophoresis) and 8543.40.00 (Electronic cigarettes), each serving entirely different industrial or consumer purposes. While 8543.70 covers "Other machines and apparatus" with individual functions not elsewhere specified, signal generators are a distinct functional category that warrants its own specific subheading due to their widespread and specialized application. Furthermore, 8543.90 pertains only to parts of the broader category of machines and apparatus under 8543.

As a leaf node, 8543.20.00.00 does not have further subdivisions. Therefore, classification within this subheading relies on identifying devices whose primary function is the generation of electronic signals for testing or other technical purposes. The nature of the generated signal (e.g., sine wave, square wave, arbitrary waveform), the frequency range, and the output power are key characteristics to consider when determining if an item falls under this classification.

Frequently Asked Questions

›What is HTS code 8543.20.00.00?
HTS code 8543.20.00.00 covers Signal generators under the US Harmonized Tariff Schedule. It falls under Chapter 85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles.
›What products are classified under 8543.20.00.00?
This classification covers Signal generators. It is a subcategory of Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: (8543).
›What is the import duty rate for 8543.20.00.00?
The general rate of duty for HTS 8543.20.00.00 is Free. The Column 2 rate is 35%.
›What unit of quantity is used for 8543.20.00.00?
Imports under HTS 8543.20.00.00 are measured in No..

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