LFXTAL051643

Overview

The LFXTAL051643 is a quartz crystal resonator manufactured by IQD Frequency Products, designed for surface-mount applications. It operates at a fundamental frequency of 32.768 kHz with a load capacitance of 9 pF and a frequency tolerance of ±20 ppm. The component utilizes an HC-49/S style package configuration adapted for SMD mounting, featuring a 2-SMD, No Lead physical form factor. Key electrical specifications include an equivalent series resistance (ESR) of 90 kOhms and a drive level of 100 uW. It supports a wide operating temperature range from -40°C to +85°C, ensuring reliability in various electronic environments.

Feature Summary

• Provides precise timing signals at 32.768 kHz for clock generation circuits
• Features a compact surface-mount package suitable for automated assembly
• Maintains frequency stability within ±20 ppm across the operational temperature range

Applications

• Real-time clock (RTC) modules in consumer electronics
• Microcontroller system clocks requiring low-frequency reference
• Portable devices utilizing battery-powered timing circuits

Procurement Notes

Verify the specific package variant and termination style against your PCB footprint requirements before ordering. Confirm that the 9 pF load capacitance matches your circuit design's oscillator load requirements. Check current availability status as supply levels may fluctuate. Ensure compliance with RoHS directives if required for your manufacturing process. Cross-reference the manufacturer part number with distributor codes to avoid ordering errors.

Selection Notes

Select this component when a standard 32.768 kHz reference is needed in a small surface-mount form factor. The 9 pF load capacitance suits designs with minimal external capacitive loading. Consider the 90 kOhm ESR value for oscillator circuit stability analysis. This part is appropriate for space-constrained applications where through-hole crystals are not feasible. Evaluate thermal performance needs against the -40°C to +85°C rating.

Part Context

This crystal belongs to IQD Frequency Products' lineup of general-purpose quartz resonators. It serves as a foundational timing element for digital systems requiring accurate second-based timekeeping or low-speed clock references. The 32.768 kHz frequency is a industry standard derived from binary division of higher frequencies. It complements other IQD components like oscillators and resonators in complete timing solutions.

Replacement Considerations

Direct substitutes must match the 32.768 kHz frequency, 9 pF load capacitance, and 2-SMD package dimensions. Verify equivalent ESR and drive level specifications to ensure circuit compatibility. Alternative manufacturers may offer similar parts but require validation of pinout and mechanical tolerances.