LFXTAL051235

Overview

The LFXTAL051235 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 18pF and an equivalent series resistance (ESR) of 40 Ohms. The component features a frequency tolerance of ±30ppm and stability of ±50ppm. Housed in an HC49/4HSMX package measuring 13.40mm x 4.90mm x 4.30mm, it supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• Fundamental resonance mode operation for stable frequency generation
• Surface-mount HC49/4HSMX package design for automated assembly
• Wide industrial temperature rating ensuring reliability across extreme conditions

Applications

• Microcontroller clock source circuits
• Communication interface timing references
• General-purpose digital logic synchronization

Procurement Notes

Verify the specific suffix designation against official IQD documentation to confirm exact electrical tolerances and packaging configuration. Ensure compatibility with existing PCB footprint dimensions and reflow soldering profiles. Cross-reference RoHS compliance status with current regulatory requirements before finalizing procurement orders.

Selection Notes

Select this component when a standard 16 MHz reference is required for space-constrained designs utilizing the HC49/4HSMX form factor. Consider the 40 Ohm ESR value for oscillator circuit loading calculations. Validate that the ±30ppm tolerance meets system timing accuracy specifications under varying thermal conditions.

Part Context

This part belongs to IQD Frequency Products' portfolio of general-purpose SMD crystals. The HC49/4HSMX package provides a robust alternative to through-hole variants while maintaining similar electrical characteristics. It serves as a foundational timing element for embedded systems requiring precise clock signals without active oscillation components.

Replacement Considerations

Direct substitutes include other manufacturers offering 16MHz 18pF HC49/4HSMX crystals with comparable ESR and tolerance. Verify mechanical footprint compatibility and ensure equivalent frequency stability ratings are maintained for critical timing applications.