Undoped GaAs Wafer 100mm Thick Film Substrate from Mexico
A 100mm undoped gallium arsenide wafer is designed as a substrate for thick-film deposition in hybrid circuits. Although gallium arsenide is an inorganic compound, wafers cut into discs are excluded from Chapter 28 by Chapter Note 8. Such wafers are classified under heading 3818 as chemically doped or undoped semiconductor wafers.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the CBSA classification reflects that cut wafers fall under heading 3818, not 2853
• Provide documentation showing the wafer's dimensions and undoped status to support the classification
• Consider obtaining a ruling from the CBSA to confirm the tariff treatment before importing