Mounted piezoelectric crystals
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: > Mounted piezoelectric crystals
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Subheadings
Products classified under HTS 8541.60.00
Quartz Crystal Oscillator 16MHz
A mounted piezoelectric quartz crystal oscillating at 16MHz, fixed in a hermetic metal can package for use in electronic circuits. It falls under HTS 8541.60.00 as a mounted piezoelectric crystal used primarily in timing and frequency control applications in devices like microcontrollers and radios. The crystal converts electrical energy to mechanical vibrations and back, providing precise frequency stability.
SMD Quartz Crystal 32.768kHz Watch Crystal
Surface-mount device (SMD) quartz crystal tuned to 32.768kHz, mounted in a ceramic package for real-time clock applications in watches and computers. Classified under HTS 8541.60.00 due to its mounted piezoelectric construction providing low-frequency timing signals. Essential for battery-powered devices requiring minimal power consumption.
HC-49S Through-Hole Quartz Crystal 12MHz
HC-49S series mounted quartz crystal with 12MHz fundamental frequency in a through-hole metal-can package for legacy electronics and microcontrollers. HTS 8541.60.00 applies as it's a fixed-mounted piezoelectric crystal for generating stable clock signals. Widely used in amateur radio and industrial controls.
TCXO Temperature Compensated Crystal Oscillator 25MHz
Mounted piezoelectric TCXO with 25MHz output, featuring thermistor compensation for temperature stability in GPS and base stations. Falls under HTS 8541.60.00 as a mounted crystal; the compensation circuit integrates with the crystal housing. Provides ±2.5ppm stability over -40°C to +85°C.
Ceramic Surface Acoustic Wave (SAW) Filter Crystal 433MHz
Mounted piezoelectric ceramic SAW filter operating at 433MHz for wireless remotes and IoT devices, packaged in SMD housing. HTS 8541.60.00 covers this mounted piezo device that filters RF signals using acoustic wave propagation. Provides bandpass filtering with low insertion loss.
VCXO Voltage Controlled Crystal Oscillator 100MHz
Voltage-controlled mounted quartz crystal oscillator at 100MHz for telecom PLL circuits, with varactor tuning in hermetic package. Classified HTS 8541.60.00 as mounted piezoelectric crystal; voltage control enhances via integrated varicap. Used in SONET/SDH network synchronizers.
Crystal Microbalance Sensor 10MHz
AT-cut quartz crystal mounted at 10MHz for quartz crystal microbalance (QCM) sensors measuring thin film thickness in vacuum deposition. HTS 8541.60.00 as mounted piezo transducer converting mass changes to frequency shifts. Gold electrodes enable chemical sensing applications.
Oven-Controlled Crystal Oscillator (OCXO) 10MHz
High-precision OCXO with crystal oven maintaining 10MHz at constant temperature for satellite and base station timing. Mounted piezoelectric crystal in double-oven package qualifies under HTS 8541.60.00. Achieves <1x10^-9 stability for Stratum 1 clocks.