Traveling Wave Tube (TWT) from Germany
Traveling wave tubes are velocity-modulated tubes that provide high gain amplification at microwave frequencies, essential for satellite communications and military radar. HTS 8540.89.00 covers these as other thermionic tubes due to their specialized electron interaction with electromagnetic waves.
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
• ITAR/EAR export licenses frequently required; verify classification before import planning
• Detailed helix structure and collector specifications needed for customs technical review