Radar Magnetron RF Interaction Helix
This helix structure is designed for RF interaction in radar magnetron tubes, facilitating microwave generation for military and aviation radar systems. 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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the RF interaction structure is for a microwave tube not classified under 8540.71-8540.79
Other parts of thermionic valves and tubes not elsewhere specified.
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
• Confirm the helix is specifically for a magnetron tube classified under subheadings 8540.71-8540.79
• Provide technical specifications, such as frequency range, to the CBSA
• If the helix is for a different type of microwave tube, verify the classification
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.
Electron Gun Subassembly for TV CRT
This modular electron gun subassembly for television cathode-ray tubes includes cathodes, grids, and focusing electrodes, essential for beam formation and deflection. It falls under tariff item 8540.99.10 as an electron gun, 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.