LFXTAL078431B

Overview

The LFXTAL078431B is a quartz crystal resonator manufactured by IQD Frequency Products. It operates at a nominal frequency of 8 MHz with a load capacitance of 20 pF. The component utilizes an HC-49/US radial package, measuring 11.35 mm in length and 4.85 mm in width. It exhibits a frequency tolerance of ±30 ppm and a stability of ±30 ppm. The equivalent series resistance (ESR) is typically 40 Ohms, with a drive level of 1 mW. The operating temperature range spans from -40°C to +85°C.

Feature Summary

• Provides stable 8 MHz frequency generation for digital circuits
• Utilizes HC-49/US through-hole mounting configuration
• Designed for operation across extended industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication interface timing
• General-purpose digital logic circuits

Procurement Notes

Verify the specific suffix designation against official IQD documentation to ensure correct tolerance and temperature grade specifications. Confirm that the HC-49/US package dimensions align with target PCB footprint requirements. Cross-reference the load capacitance value with the host circuit design to maintain accurate frequency performance. Ensure compliance with relevant environmental standards for the intended application environment.

Selection Notes

Select this component when an 8 MHz reference signal is required for systems utilizing HC-49/US form factors. Consider the ±30 ppm tolerance for applications where precise timing accuracy is critical. Evaluate the 20 pF load capacitance requirement against the oscillator circuit's internal capacitors. Assess the thermal stability needs to ensure reliable operation within the specified -40°C to +85°C range.

Part Context

This part belongs to the standard quartz crystal lineup from IQD Frequency Products, a supplier specializing in frequency control solutions. The LFXTAL series represents general-purpose resonators suitable for mass production electronics. These components are widely used in consumer, industrial, and automotive sectors requiring reliable clock signals.

Replacement Considerations

Direct substitutes must match the 8 MHz frequency, 20 pF load capacitance, and HC-49/US package. Verify equivalent ESR and drive level specifications to prevent frequency pulling or instability. Check compatibility with existing oscillator circuit designs before implementation.