Microwave Magnetron Electron Gun from China
Electron gun designed for magnetron microwave tubes used in radar and cooking appliances, emitting electrons into the RF interaction space. Classified under HTS 8540.99.4000 as an RF interaction structure component for microwave tubes of 8540.71-8540.79. Critical for high-power RF generation.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Confirm the electron gun pairs with microwave tubes in 8540.71-79 via supplier specs to meet subheading requirements
• Obtain FCC compliance docs for RF components to avoid customs holds on electromagnetic interference issues
• Declare power ratings accurately, as high-power guns may require export licensing from origin country