Semiconductor-based transducers
Semiconductor devices (for example, diodes, transistors, semiconductor-based transducers); photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED), whether or not assembled with other light-emitting diodes (LED); mounted piezo-electric crystals; parts thereof: > Other semiconductor devices: > Semiconductor-based transducers
Duty Rate (from China)
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
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 8541.51.00.00
MEMS Microphone
A Micro-Electro-Mechanical Systems (MEMS) microphone that converts sound waves into electrical signals using semiconductor technology. It falls under HTS 8541.51.00.00 as a semiconductor-based transducer designed for audio input in smartphones, laptops, and wearables. These devices integrate semiconductor fabrication processes for high sensitivity and miniaturization.
Semiconductor Pressure Sensor
A piezoresistive pressure sensor using silicon diaphragm to transduce pressure into electrical resistance changes. Classified under HTS 8541.51.00.00 for semiconductor-based transducers used in automotive, medical, and industrial applications. It relies on semiconductor doping for strain gauge functionality.
Photovoltaic Transducer Cell
A single semiconductor-based photovoltaic cell functioning as a light-to-electricity transducer, not assembled into panels. HTS 8541.51.00.00 covers such photosensitive semiconductor transducers used in sensors or small power applications. It converts photons directly via p-n junction without module packaging.
Silicon Accelerometer Sensor
A MEMS accelerometer using semiconductor capacitive plates to transduce acceleration into electrical signals. Falls under HTS 8541.51.00.00 as a semiconductor-based motion transducer for smartphones, drones, and automotive stability control. Fabricated via silicon etching for differential capacitance detection.
CMOS Image Sensor
A Complementary Metal-Oxide-Semiconductor (CMOS) image sensor transducing light into digital electrical signals via photosites. Classified under HTS 8541.51.00.00 for semiconductor-based transducers in digital cameras and machine vision. Each pixel acts as an independent photodetector.
Hall Effect Sensor
A semiconductor Hall effect transducer converting magnetic fields into voltage via Hall voltage generation in silicon. HTS 8541.51.00.00 applies to these contactless position/magnetic field sensors used in motors, keyboards, and automotive. Utilizes semiconductor carrier mobility for transduction.
Semiconductor Temperature Sensor IC
A bandgap voltage reference temperature transducer using semiconductor pn-junction forward voltage variation. Under HTS 8541.51.00.00 for semiconductor-based thermal transducers in processors, HVAC, and medical devices. Transduces temperature directly to analog/digital output.
Gas Sensor Semiconductor Chip
A metal-oxide-semiconductor (MOS) gas transducer detecting reducing gases via conductivity changes. HTS 8541.51.00.00 covers these semiconductor-based chemical transducers for air quality monitors and industrial safety. Surface reaction alters carrier concentration for detection.
Inclinometer MEMS Sensor
MEMS inclinometer transducing tilt angle via semiconductor accelerometers and gravity vector analysis. Classified HTS 8541.51.00.00 for semiconductor-based orientation transducers in construction lasers and robotics. Combines multiple axes for 3D inclination measurement.
Flow Sensor Silicon Chip
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.