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Oscilloscope Cathode-Ray Tube Electron Gun

This is an electron gun designed for use in high-speed oscilloscope cathode-ray tubes (CRTs). It provides precise beam deflection for accurate waveform display in test and measurement equipment. As a part of a thermionic tube, it is classified under tariff item 8540.99.10, which covers electron guns for such tubes.

Import Duty Rates by Country of Origin

Origin CountryMFN TariffSurtaxesTotal Effective Rate
🇨🇳ChinaFree—Free
🇲🇽MexicoFree—Free
🇺🇸United StatesFree—Free
🇩🇪GermanyFree—Free
🇯🇵JapanFree—Free

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8540.99.90Same rate: Free

If the electron gun is not specifically for oscilloscope CRTs or if it is a general-purpose part.

This subheading covers other parts of thermionic tubes not specifically listed, providing a broader classification option.

8540.20.00Same rate: Free

If the electron gun is imported as part of a complete cathode-ray tube, rather than as a separate part.

Complete cathode-ray tubes are classified under this heading, which may be more appropriate if the gun is integrated into a tube.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Ensure the electron gun is declared as a part of a cathode-ray tube, not as a complete tube, to qualify for this tariff item

• Provide a detailed product description and technical specifications to the CBSA to support classification

• Verify if the goods qualify for preferential tariff treatment under any free trade agreement, as duty rates may vary

Related Products under Tariff item 8540.99.10

Broadcast Transmitter Klystron RF Structure

This is a radio frequency (RF) interaction structure designed for high-power klystron microwave tubes used in broadcast transmitters. It is a critical component that enables the amplification of RF signals to multi-megawatt levels, and it falls under tariff item 8540.99.10 as an RF interaction structure for microwave tubes of subheadings 8540.71, 8540.72, or 8540.79.

CRT Television Electron Gun Assembly

This electron gun assembly is a key component of cathode-ray tube (CRT) televisions, generating and accelerating electron beams to strike the phosphor screen for image display. It falls under tariff item 8540.99.10 as an electron gun, which is a part of thermionic valves and tubes.

High-Voltage Television Camera Tube Electron Gun

This is an electron gun designed for television camera tubes (vidicons), used to accelerate electrons for image sensing in broadcast and industrial cameras. It falls under tariff item 8540.99.10 as an electron gun, a part of thermionic valves and tubes.

Industrial X-Ray Tube Electron Gun

This electron gun is a component for industrial X-ray tubes, generating electron beams for non-destructive testing applications. It falls under tariff item 8540.99.10 as an electron gun, a part of thermionic valves and tubes, provided the X-ray tube is classified under heading 85.40.

Klystron Tube Electron Gun

This precision electron gun is designed for klystron microwave tubes used in particle accelerators and broadcasting transmitters. It falls under tariff item 8540.99.10 as an electron gun, a part of thermionic valves and tubes, specifically for microwave tubes of subheadings 8540.71, 8540.72, or 8540.79.

Microwave Magnetron Electron Gun

This electron gun is designed for magnetron microwave tubes used in radar and cooking appliances, emitting electrons into the RF interaction space. It falls under tariff item 8540.99.10 as an electron gun for microwave tubes of subheadings 8540.71, 8540.72, or 8540.79.