LFXTAL078430B

Overview

The LFXTAL078430B is a quartz crystal resonator manufactured by IQD Frequency Products. It operates at a fundamental frequency of 4 MHz with a load capacitance of 20 pF. The component features a frequency tolerance of ±30 ppm and an equivalent series resistance (ESR) of 130 Ohms maximum. It utilizes the HC-49/US package style for through-hole mounting, measuring approximately 11.35 mm in length and 4.85 mm in width.

Feature Summary

• Fundamental mode quartz crystal operation
• HC-49/US radial leaded package configuration
• Through-hole mounting compatibility

Applications

• General purpose clock signal generation
• Microcontroller oscillator circuits
• Communication interface timing references

Procurement Notes

Verify current availability status directly with authorized distributors as inventory levels fluctuate. Confirm that the HC-49/US package dimensions align with your PCB footprint requirements. Ensure the 20 pF load capacitance matches your circuit design specifications to maintain accurate frequency stability.

Selection Notes

Select this component when a standard 4 MHz reference is required for through-hole assembly. The HC-49/US form factor offers robust mechanical stability for industrial environments. Consider the 130 Ohm ESR limit to ensure proper oscillation startup within your specific driver circuit constraints.

Part Context

This part belongs to the standard quartz crystal category from IQD Frequency Products. It serves as a passive frequency control element essential for synchronizing digital logic and analog circuits. The HC-49/US series is widely recognized for its reliability in consumer and industrial electronics applications.

Replacement Considerations

Cross-reference with other HC-49/US 4 MHz crystals having compatible 20 pF load capacitance and similar ESR limits. Verify pin spacing and physical dimensions match before substitution.