LFXTAL028430

Overview

LFXTAL028430 is a quartz crystal resonator manufactured by IQD Frequency Products, designed for surface-mount technology applications. It operates at a nominal frequency of 3.2768 MHz with a load capacitance of 18 pF and an equivalent series resistance of 300 Ohms. The component features a frequency tolerance of ±30 ppm and a frequency stability of ±50 ppm across the operating temperature range of -20°C to +70°C. It utilizes the HC49/4HSMX package, measuring 13.40 mm in length, 4.90 mm in width, and having a maximum seated height of 4.30 mm. The device supports a maximum drive level of 500 µW.

Feature Summary

• Hermetic glass-metal leaded seal construction provides enhanced environmental protection against humidity and contaminants compared to standard plastic packages.
• Optimized for low-power operation with a maximum drive level of 500 µW, suitable for battery-powered and energy-efficient systems.
• Integrated design allows direct substitution into existing through-hole compatible footprints while enabling automated surface-mount assembly.

Applications

• Real-time clock (RTC) circuits requiring precise timekeeping
• Microcontroller system clocks for industrial data acquisition
• Low-frequency sampling clock generation for analog-to-digital converters

Procurement Notes

Verify the specific ordering suffix to ensure compliance with RoHS and REACH regulations before procurement. Confirm that the selected packaging format aligns with your SMT production line capabilities. Ensure the supplier provides valid documentation regarding material composition and manufacturing origin to meet quality assurance standards.

Selection Notes

Select this component when a stable 3.2768 MHz reference is required for RTC or low-speed timing applications. The hermetic seal makes it suitable for high-humidity environments where standard plastic-packaged crystals may fail. Consider the 18 pF load capacitance requirement when designing the oscillator circuit to ensure accurate frequency performance.

Part Context

The LFXTAL028430 belongs to the HC49/4HSMX series from IQD Frequency Products, which bridges traditional through-hole reliability with modern surface-mount convenience. This series is widely used in industrial and consumer electronics where long-term frequency stability and environmental robustness are critical requirements.

Replacement Considerations

The part number LFXTAL028929 is listed as an alternate part number in distributor databases, though it operates at 8.6016 MHz and requires verification for functional compatibility.