LFXTAL003176B

Overview

The IQD Frequency Products LFXTAL003176B is a quartz crystal resonator designed for through-hole mounting in the HC-49/4H package. It operates at a nominal frequency of 18.432 MHz with a frequency tolerance of ±30 ppm and a frequency stability of ±50 ppm over the operating temperature range. The component features a load capacitance of 30 pF and an equivalent series resistance (ESR) of 40 Ohms. It supports fundamental mode operation and functions within a temperature range of -20°C to +70°C. The device utilizes a two-pin configuration and complies with RoHS standards.

Feature Summary

• Fundamental mode quartz crystal resonator
• Through-hole installation via HC-49/4H package
• Compliant with RoHS environmental directives

Applications

• Microcontroller clock circuits
• Digital logic timing references
• Communication interface synchronization

Procurement Notes

Verify the specific package variant, as HC-49 designations may include US or standard configurations. Confirm that the 18.432 MHz frequency aligns with system oscillator requirements. Ensure the ±50 ppm stability meets application needs. Check compliance documentation for regional regulatory adherence. Validate pin compatibility during PCB layout integration.

Selection Notes

Select this component when a stable 18.432 MHz reference is required for through-hole assembly. Consider the ±30 ppm tolerance for initial accuracy and ±50 ppm stability for thermal variations. The 40 Ohm ESR must match the oscillator circuit drive level specifications. Evaluate the HC-49/4H dimensions against available board space constraints.

Part Context

This part belongs to the HC49/4H series of quartz crystals from IQD Frequency Products. These components are widely used in general-purpose electronics requiring precise timing. The series offers various frequency options within the same mechanical footprint, allowing for standardized manufacturing processes across different product lines.

Replacement Considerations

Parametric equivalents such as LFXTAL003176B are available. Verify matching frequency, tolerance, stability, and package dimensions before substitution. Ensure the replacement maintains the same ESR and load capacitance values to guarantee circuit oscillation reliability.