TradeTools

HS-4 · Heading

8540Thermionic, cold cathode or photo-cathode valves and tubes (e.g. vacuum, vapour, gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray and television camera tubes)

Chapter 85: Electrical machinery and equipment

Plain-language overview

Use HS-4 8540 when importing thermionic, cold cathode, or photo-cathode valves and tubes, such as vacuum tubes or cathode-ray television picture tubes. For example, if you're bringing in a shipment of color cathode-ray tubes for televisions, this is the correct code.

To determine the right subheading, consider the specific type of tube. For instance, if your product is a monochrome cathode-ray tube, you would classify it under HS-6 854012. In contrast, color tubes fall under HS-6 854011. This distinction is crucial for accurate tariff classification and duty assessment.

If your shipment includes television camera tubes or image converters, you should use HS-6 854020. This line specifically covers photo-cathode tubes used in imaging applications, differing from the cathode-ray tubes meant for display purposes. Make sure to identify the end-use to select the correct subheading.

For microwave tubes, the choice between HS-6 854071 (magnetrons) and HS-6 854079 (other microwave tubes like klystrons) depends on the specific technology used. If you're importing magnetrons, choose 854071, while for klystrons, select 854079.

Keywords & topics

Useful terms traders and brokers use for this HS-4 heading.

thermionic valves · cold cathode tubes · photo-cathode tubes · cathode-ray tubes · television picture tubes · microwave tubes · valves and tubes · importing electronics · HS-4 classification · electronic components · customs codes · tariff classification · electrical machinery · import/export regulations · cathode-ray technology · television components

Examples

Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.

  • Color cathode-ray television picture tubes
  • Monochrome cathode-ray television picture tubes
  • Television camera tubes and image converters
  • Microwave magnetrons for radar applications
  • Klystrons used in communication systems
  • Parts of cathode-ray tubes for repair
  • Vacuum tubes used in audio amplifiers

Common questions

Frequent classification questions with short practical guidance.

What is HS-4 8540 used for?

Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.

How do I classify cathode-ray tubes?

Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.

What are the subheadings under HS-4 8540?

Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.

Which code for microwave tubes?

Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.

How to import thermionic valves?

Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.

What are the duties for HS-4 8540 products?

Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.

How to determine the right HS-6 code?

Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.

Related topics

Common real-world topics that come up during code comparison.

how to classify thermionic valves for import

Check the exact product specs and destination-country tariff notes before finalizing the code.

difference between cathode-ray and microwave tubes

Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.

best practices for importing electronic components

Check the exact product specs and destination-country tariff notes before finalizing the code.

how to choose the right HS-6 subheading

Use this topic to narrow your shortlist, then validate the final code against legal wording.

import regulations for television picture tubes

Check the exact product specs and destination-country tariff notes before finalizing the code.

understanding HS-4 8540 for customs

Check the exact product specs and destination-country tariff notes before finalizing the code.

specifics of importing photo-cathode tubes

Check the exact product specs and destination-country tariff notes before finalizing the code.

guidelines for tariff classification of valves and tubes

Use this topic to narrow your shortlist, then validate the final code against legal wording.

Questions & answers

For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.

What types of products fall under HS-4 8540?
HS-4 8540 includes thermionic, cold cathode, and photo-cathode valves and tubes, such as vacuum tubes and cathode-ray tubes used in televisions.
How do I know which HS-6 code to use?
Identify the specific type of tube or valve you are importing. For example, use **HS-6 854011** for color cathode-ray tubes and **HS-6 854012** for monochrome tubes.
What is the difference between magnetrons and klystrons?
Magnetrons are classified under **HS-6 854071**, while klystrons and similar microwave tubes fall under **HS-6 854079**.
Are there any parts classified under HS-4 8540?
Yes, there are specific subheadings for parts, such as **HS-6 854091** for parts of cathode-ray tubes and **HS-6 854099** for other valve and tube parts.
What are the import duties for products under HS-4 8540?
Import duties vary based on the specific HS-6 code and the country of origin. Check with your local customs authority for detailed rates.
Can I use HS-4 8540 for all electronic tubes?
No, HS-4 8540 specifically covers thermionic, cold cathode, and photo-cathode tubes. Other electronic components may fall under different headings.

Continue classification

Next best action

Pick one of these actions to move from reading to a defensible classification decision.

Browse this heading in the lookup

Heading-browse mode uses HS-6 854000 (first line of this block).

HS-6 subheadings (11)

← HS-4 directory (chapter 85)