HS Code for Amplifier tube

Amplifier tubes are classified under HS code 8540.81. This classification is governed by the provisions of Chapter 85, which covers electrical machinery and equipment. Heading 8540 specifically includes thermionic, cold cathode, or photo-cathode valves and tubes, such as vacuum or gas-filled tubes. The subheading 8540.81 is designated for receiver or amplifier valves and tubes. The classification is based on the physical construction and operating principle of the device—specifically, the use of a vacuum to control electron flow between electrodes. Despite the prevalence of solid-state technology, vacuum tubes (or valves) remain a distinct category in the Harmonized System. The classification applies to the individual component itself. It is important to note that the HS code is determined by the nature of the tube (thermionic) rather than the specific device it is installed in, provided it is imported as a separate part. This code is used globally to identify vacuum-based amplification components used in high-end audio equipment, radio transmitters, and vintage electronics restoration.

Products Included

• Vacuum triodes
• Vacuum pentodes
• Audio amplification tubes
• Thermionic valves for receivers
• Glass or metal envelope amplifier tubes

Common Misclassification

A common misclassification occurs with HS code 8518.40, which covers audio-frequency electric amplifiers. Code 8518.40 refers to the complete electronic appliance, whereas 8540.81 refers specifically to the individual vacuum tube component. Additionally, some importers mistakenly use 8541.21, which is for transistors; however, transistors are solid-state semiconductor devices and are technologically distinct from the thermionic valves covered under 8540.

FAQ

What is the HS code for Amplifier tube?

The HS code for an individual amplifier vacuum tube is 8540.81.

Does this code include solid-state transistors?

No, solid-state transistors are classified under heading 8541, as they do not utilize a vacuum or thermionic emission to operate.