Grid-Controlled Vacuum Tube from China
A grid-controlled vacuum tube, such as a triode, uses a control grid to modulate electron flow from a heated cathode to an anode for amplification in audio and RF circuits. This thermionic tube falls under this tariff item as an 'other' valve or tube.
Duty Rate — China → Canada
0%
Import Tips
• Classify the tube based on its thermionic operation with a control grid, not as a semiconductor device
• Provide specifications showing the tube's intended use in amplification
• Ensure the tube is not part of a larger apparatus to avoid reclassification