Klystron Gas-Loaded Reflex Tube from Canada
Gas-loaded klystron tubes use controlled gas pressure for microwave power generation in scientific accelerators. The gas affects electron velocity, qualifying as vapor electron tubes under HTS 8540.89.0020.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Vacuum pumpdown specs must show residual operating gas pressure
• Particle accelerator end-use statement may trigger EAR licensing
• RF power output rating critical for classification