LFXTAL078521B

Overview

The LFXTAL078521B is a through-hole quartz crystal manufactured by IQD Frequency Products. It operates at a fundamental frequency of 8 MHz with a load capacitance of 20 pF. The component features a frequency tolerance of ±30 ppm and an equivalent series resistance (ESR) of 40 Ohms. It utilizes the HC-49/US package style, designed for radial mounting on printed circuit boards.

Feature Summary

• Fundamental mode quartz resonator operation
• HC-49/US standard through-hole packaging
• Radial lead configuration for board mounting

Applications

• General-purpose clock signal generation
• Microcontroller oscillator circuits
• Digital logic timing references

Procurement Notes

Verify the specific suffix requirements against the manufacturer's current datasheet to ensure compatibility with your design's mechanical and electrical constraints. Confirm that the HC-49/US package dimensions align with your PCB footprint and that the 20 pF load capacitance matches your circuit design requirements before finalizing procurement.

Selection Notes

Select this component when a standard through-hole crystal is required for 8 MHz applications. The HC-49/US package offers robust mechanical stability compared to surface-mount alternatives. Ensure the system design accommodates the 40 Ohm ESR and 20 pF load capacitance specifications for proper oscillation startup and stability.

Part Context

This part belongs to the general-purpose quartz crystal category from IQD Frequency Products. It serves as a basic timing element for electronic circuits requiring a stable 8 MHz reference. The HC-49/US form factor is widely recognized in legacy and industrial designs for its durability and ease of manual or automated insertion.

Replacement Considerations

Cross-reference with other manufacturers offering HC-49/US 8 MHz crystals with 20 pF load capacitance and similar ESR values. Verify pin spacing and physical height compatibility to ensure direct replacement without PCB modification.