VCXO Voltage Controlled Crystal Oscillator
Voltage Controlled Crystal Oscillator (VCXO) with mounted quartz crystal allowing frequency adjustment via control voltage. Used in telecom PLL circuits. HTS 8541.60.0080 for other mounted piezoelectric crystals with voltage control.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If with radio transmission capability
Machines transmitting/receiving uses different classification.
If measuring/adjusting instruments
Measuring instruments with piezo elements classified separately.
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Import Tips & Compliance
• Document pulling range and linearity specs for voltage control verification
• Distinguish from OCXO (oven-controlled) which may have heating elements affecting classification
• FCC compliance for frequency-generating devices operating above certain thresholds
Related Products under HTS 8541.60.00.80
Quartz Crystal Oscillator 32.768 kHz
A small surface-mount quartz crystal oscillator operating at 32.768 kHz, used in real-time clocks for microcontrollers and watches. It consists of a piezoelectric quartz crystal mounted between metal electrodes on a ceramic base with frequency-determining circuit elements. Classified under HTS 8541.60.0080 as a mounted piezoelectric crystal, other than those for specific frequency uses.
SMD Quartz Crystal 12 MHz
Surface-mount device (SMD) quartz crystal resonator tuned to 12 MHz for use in microprocessors and communication devices. The piezoelectric quartz is hermetically sealed in a ceramic package with gold electrodes. Falls under HTS 8541.60.0080 as other mounted piezoelectric crystals used for frequency control.
TCXO Temperature Compensated Crystal Oscillator
Temperature Compensated Crystal Oscillator (TCXO) with mounted quartz crystal providing stable frequency output over -40°C to +85°C range. Used in GPS modules and base stations. HTS 8541.60.0080 covers this as other mounted piezoelectric crystals with compensation circuitry.
Ceramic Resonator 4 MHz
Leadless ceramic resonator containing piezoelectric ceramic crystal element operating at 4 MHz for microcontroller clocks. Mounted in surface-mount package. Classified in 8541.60.0080 as other mounted piezoelectric crystals (ceramic-based).
SAW Surface Acoustic Wave Filter Crystal
Surface Acoustic Wave (SAW) device using piezoelectric substrate for RF filtering at cellular frequencies. Mounted interdigital transducers on quartz or lithium niobate. 8541.60.0080 as other mounted piezo crystals for filtering.
Crystal Filter 455 kHz IF
Monolithic crystal filter using multiple mounted quartz crystals coupled for 455 kHz intermediate frequency selectivity in radio receivers. Provides narrow bandwidth filtering. Classified under HTS 8541.60.0080 as other mounted piezoelectric crystals.