Multilayer Ceramic Feedthrough Insulators from United States
Multilayer ceramic feedthrough insulators are hermetic feedthroughs with multiple gold-plated pins in a 99.5% alumina body, designed for vacuum chamber penetrations in semiconductor equipment. They are vacuum tight to 1x10^-9 Torr. These insulators are classified under tariff item 8546.20.00 as ceramic electrical insulators.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the feedthroughs are described as ceramic insulators, not as parts of semiconductor equipment, to avoid classification under heading 84.86
• Provide documentation on the alumina purity and vacuum rating to support the classification
• If the feedthroughs include pins, confirm whether they are considered complete insulators or parts