Magnetron Oscillator Tube
A magnetron tube is a high-power vacuum tube that generates microwave frequencies using the interaction of a stream of electrons from a heated cathode and a powerful magnetic field. It falls under HTS 8540.89.00 as an other thermionic tube, specifically a cold cathode or vacuum tube used primarily in microwave ovens and radar systems.
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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 imported as assembled microwave oven component
Complete microwave ovens or subassemblies fall under heading 8516, not separate tubes.
If classified as radar transmitter part
Radar system parts may fall under Chapter 85 television/radar parts rather than standalone tubes.
If for laboratory measuring instruments
Instrument-specific tubes classified by end-use under measuring instruments heading.
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Import Tips & Compliance
• Verify tube specifications match thermionic/vacuum tube definitions; provide technical datasheets for customs classification
• Ensure RoHS compliance documentation as these tubes often contain hazardous materials like mercury
Related Products under HTS 8540.89.00
Magnetron Injection-Locked Tube
Phase-locked magnetron tubes for coherent microwave power combining in radar systems. Classified under HTS 8540.89.00 as specialized thermionic tubes with injection locking circuitry for phase control.
Klystron Power Amplifier Tube
Klystron tubes are specialized linear beam vacuum tubes used for amplification of microwave signals in high-power applications like radio transmitters and particle accelerators. Classified under HTS 8540.89.00 as other thermionic tubes due to their electron beam focusing mechanism in vacuum environment.
Xenon Flashtube Trigger Tube
High-voltage gas tubes triggering xenon flashtubes in high-intensity strobe lighting. HTS 8540.89.00 covers these as other gas-filled tubes initiating capacitive discharge through gas ionization.
Thyratron Gas-Filled Switching Tube
Thyratrons are gas-filled tubes containing low-pressure inert gas used for high-power switching and rectification in industrial applications. They qualify under HTS 8540.89.00 as other gas-filled tubes functioning through gas ionization triggered by cathode emission.
Ignitron Mercury Arc Rectifier Tube
Ignitrons are large mercury arc rectifier tubes used for high-current DC power conversion in industrial applications like aluminum smelting. HTS 8540.89.00 includes these mercury vapor-filled tubes operating via cathode-initiated arc discharge.
Photomultiplier Tube (PMT)
Photomultiplier tubes convert weak light signals into electrical pulses through electron multiplication across multiple dynodes. Classified under HTS 8540.89.00 as photocathode tubes designed for photon detection in scientific instruments.