Klystron Gas-Loaded Reflex Tube from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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