LFXTAL027298B

Overview

The LFXTAL027298B is a parallel fundamental quartz crystal from the HC49/4H series, manufactured by IQD Frequency Products. It operates at a nominal frequency of 4 MHz with a frequency tolerance of ±30 ppm and a load capacitance of 18 pF. The component supports through-hole mounting in an HC-49 package. It functions within a temperature range of -20 °C to +70 °C and exhibits a maximum equivalent series resistance of 130 Ω.

Feature Summary

• Parallel fundamental resonance configuration for stable oscillator circuits
• HC-49/4H through-hole package design for standard PCB integration
• Compliant with RoHS environmental standards

Applications

• General-purpose microcontroller clock sources
• Industrial control system timing references
• Consumer electronics frequency generation

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target circuit design before procurement. Confirm that the HC-49/4H package dimensions align with the available board space. Ensure the supplier provides valid documentation confirming compliance with relevant material restrictions and quality standards.

Selection Notes

Select this component when a 4 MHz reference signal is required for through-hole assembly. The ±30 ppm tolerance suits applications where moderate frequency stability is sufficient. Consider the 130 Ω ESR limit to ensure proper oscillation startup conditions within the host circuit design constraints.

Part Context

This part belongs to the HC49/4H series of quartz crystals offered by IQD Frequency Products. The series provides standard through-hole components suitable for general frequency control needs. IQD supplies a broad portfolio of frequency products including oscillators and resonators for various industrial and consumer markets.

Replacement Considerations

Cross-reference alternative HC-49/US packages with identical 4 MHz frequency, 18 pF load capacitance, and ±30 ppm tolerance. Verify mechanical footprint compatibility and electrical parameters such as ESR and drive level before substitution.