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8540.89.00/Thyratron Gas-Filled Switching Tube/Japan

Thyratron Gas-Filled Switching Tube from Japan

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.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• 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

Thyratron Gas-Filled Switching Tube from Japan — Import Duty Rate | HTS 8540.89.00