Mica RF Window Disks from Germany
Circular worked mica disks transparent to radio frequencies used in high-power RF windows for transmitters. Articles of worked mica under HTS 6814.90.00.00.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include RF transmission loss data (<0.1 dB) to prove dielectric properties
• Specify diameter tolerances for waveguide fitting without constituting assemblies
• Avoid metal flanges; flanged windows classify as transmitter parts