Flow Sensor Silicon Chip from China
Thermal mass flow sensor using semiconductor heater/resistor pairs to transduce fluid flow via heat dissipation. HTS 8541.51.00.00 for semiconductor-based flow transducers in medical ventilators and HVAC. Silicon micromachining creates isolated thermal sensing elements.
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
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Flow range and media compatibility matrices essential for classification support
• Biocompatibility certs for medical flow sensors; FDA registration may apply
• Declare as cleanroom fabricated to emphasize semiconductor manufacturing