Telecom Base Station Quartz 900 kHz
High-precision 900 kHz quartz crystals for cellular base station timing synchronization use oven-controlled mounting. Falls under HTS 8541.60.00.20 as mounted piezo quartz below 1 MHz, essential for network timing stability.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If as transmission apparatus for telecom
Telecom transmission equipment has specific HTS classifications.
If as telecom test instruments
Measuring instruments for telecom shift classification.
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Import Tips & Compliance
• Provide OCXO (oven-controlled) specifications confirming quartz mounting
• Include phase noise and aging specs for telecom qualification
• FCC compliance docs required for telecom frequency devices
Related Products under HTS 8541.60.00.20
HC-49S Quartz Crystal 3.579545 MHz
The HC-49S is a through-hole quartz crystal resonator designed for frequencies like 3.579545 MHz, used in consumer electronics such as TV tuners and older computer clocks. It falls under HTS 8541.60.00.20 as a mounted piezoelectric quartz crystal operating below 1 MHz (excluding 32.768 kHz watch crystals). These are precision-tuned for stable oscillation in RF circuits.
AT-Cut Quartz Crystal 4.9152 MHz
AT-cut quartz crystals operating at 4.9152 MHz are mounted piezoelectric devices commonly used in microcontroller clocks and communication equipment. Classified under HTS 8541.60.00.20 for frequencies not exceeding 1 MHz except 32.768 kHz, these provide high stability for timing circuits in industrial controls.
SMD Quartz Crystal 8 MHz
Surface-mount device (SMD) quartz crystals tuned to 8 MHz are mounted piezoelectric components for compact electronics like IoT devices and wearables. HTS 8541.60.00.20 applies to these low-frequency (<1 MHz except 32.768 kHz) crystals with gold electrodes and ceramic housing for reliable oscillation.
HC-18U Quartz Crystal 455 kHz
HC-18U series quartz crystals at 455 kHz are used in IF filters for AM radios and low-frequency receivers. This mounted piezoelectric crystal fits HTS 8541.60.00.20 as its frequency is below 1 MHz and not the excluded 32.768 kHz, providing precise filtering in analog circuits.
Crystal Oscillator Module 16 MHz Quartz
Pre-assembled quartz crystal oscillator modules with 16 MHz fundamental frequency include the mounted quartz die, IC, and capacitors in one package for easy PCB integration. Classified in HTS 8541.60.00.20 when the core quartz operates below 1 MHz (excluding 32.768 kHz), used in embedded systems.
Low-Frequency Tuning Fork Quartz 100 kHz
Tuning fork style mounted quartz crystals at 100 kHz offer low power consumption for sensor timing and medical devices. HTS 8541.60.00.20 covers this frequency range for mounted piezo crystals, excluding only 32.768 kHz real-time clock variants.