Unmounted chips, dice and wafers
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: > Photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED): > Other: > Transistors > Unmounted chips, dice and wafers
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 8541.49.70.40
Silicon Photodiode Chip
Unmounted silicon chip designed as a photosensitive semiconductor device for converting light into electrical current. Classified under 8541.49.70.40 as an unmounted photosensitive transistor chip used in optical sensors and detectors. Lacks packaging or mounting, qualifying it as a raw die or wafer form.
GaAs Phototransistor Die
Gallium Arsenide (GaAs) unmounted die functioning as a photosensitive transistor for high-speed light detection. Falls under 8541.49.70.40 due to its unmounted chip form and transistor-based photosensitivity for telecom and sensing applications.
CCD Image Sensor Wafer
Unprocessed silicon wafer containing multiple Charge-Coupled Device (CCD) photosensitive transistor chips for imaging applications. Classified in 8541.49.70.40 as unmounted wafers of photosensitive semiconductor transistors before dicing.
CMOS Phototransistor Chip
Unmounted CMOS-based photosensitive transistor chip for low-light detection in consumer electronics. Meets 8541.49.70.40 as an unpackaged die with transistor photosensitivity for ambient light sensors.
InGaAs Photodiode Wafer
Indium Gallium Arsenide wafer of unmounted photosensitive transistor dice for near-infrared detection. Under 8541.49.70.40 for its raw wafer form used in fiber optic and spectroscopy.
SiC UV Phototransistor Die
Silicon Carbide unmounted die as photosensitive transistor for ultraviolet light sensing. Fits 8541.49.70.40 criteria for unmounted chips in harsh environment detectors.
Quantum Dot Photodetector Chip
Unmounted chip with quantum dot-enhanced photosensitive transistors for broad-spectrum detection. Classified 8541.49.70.40 as innovative unmounted photosensitive semiconductor dice.