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.
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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 thyristor modules
Solid-state equivalents classified as semiconductor devices, not gas tubes.
If power supply rectifiers
Rectifier assemblies containing thyratrons classified by end-use power supply.
If photosensitive semiconductor devices
Light-triggered versions may classify differently if photocathode-dominant.
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Import Tips & Compliance
• Specify gas type (hydrogen/argon) and pressure ratings in technical documentation
• Hazardous material declarations required for gas-filled tubes during transport
• Distinguish from semiconductor thyristors under 8541; confirm gas discharge mechanism
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