Silicon Intensifier Target Camera Tube from Canada
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 — Canada → United States
16%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, 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