Silicon Intensifier Target Camera Tube from Japan
SIT tubes use silicon targets with electron beam intensification for extremely low-light television camera applications like astronomy. Classified in HTS 8540.20.20.80 as other cathode-ray television camera tubes with photocathode elements.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Astronomical end-use letters prevent industrial reclassification under machine vision codes
• Quantum efficiency specs mandatory to distinguish from display CRT phosphor tubes
• Cleanroom packaging required; contamination voids photocathode warranty and classification