Germanium Point Contact Diode OA90 from China
The OA90 is a vintage germanium diode used in radio frequency detection and vintage electronics restoration. It offers low forward voltage for crystal radio detectors, classified under HTS 8541.10.00 for non-photosensitive diodes regardless of semiconductor material.
Duty Rate — China → United States
50%
Rate breakdown
9903.91.0550%Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Specify germanium material and detector function to distinguish from silicon types for proper valuation
• Import in small quantities to avoid anti-dumping scrutiny on legacy components
• Include test data showing low leakage current typical of point-contact construction