LFXTAL055951

Overview

The LFXTAL055951 is a fundamental mode quartz crystal manufactured by IQD Frequency Products, designed for surface-mount applications. It operates at a nominal frequency of 16 MHz with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 70 Ohms. The component belongs to the CFPX-180 series and features a compact 4-SMD, No Lead package measuring 3.20mm x 2.50mm x 0.80mm maximum height. It offers a frequency tolerance and stability of ±30 ppm across an operating temperature range of -40°C to +85°C. The device is RoHS compliant and suitable for general-purpose timing circuits requiring stable clock signals.

Feature Summary

• Fundamental resonance mode operation within the CFPX-180 series
• Compact 4-SMD no-lead surface mount package design
• Wide industrial operating temperature range from -40°C to +85°C
• RoHS compliant construction with hermetic sealing

Applications

• Quartz wristwatches and timekeeping devices
• Digital integrated circuit clock generation
• Radio transmitter frequency references

Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration, such as tape and reel or cut tape options. Confirm that the required frequency tolerance of ±30 ppm aligns with the system design specifications. Ensure the PCB footprint matches the 3.20mm x 2.50mm dimensions and check soldering profile requirements for the SMD package type during assembly planning.

Selection Notes

Select this component when a 16 MHz reference signal is required in space-constrained designs utilizing surface mount technology. The 18 pF load capacitance must match the oscillator circuit's external capacitor values to achieve accurate frequency performance. Consider the 70 Ohm ESR value for compatibility with the driving circuitry and ensure the ±30 ppm stability meets the application's timing accuracy requirements over the specified temperature range.

Part Context

This part is part of the CFPX-180 series of surface mount crystals from IQD Frequency Products. The series provides various frequencies and package sizes optimized for modern electronics manufacturing. IQD Frequency Products is a recognized supplier of frequency control components, now part of the Wurth Group, offering solutions for consumer, industrial, and automotive markets.

Replacement Considerations

Cross-reference with other 16 MHz SMD crystals having 18 pF load capacitance and compatible package dimensions. Verify electrical parameters such as ESR and frequency stability before substitution. Ensure the replacement component supports the same operating temperature range and mounting style.