LFXTAL003179BULK

Overview

The LFXTAL003179BULK is a 20 MHz series resonant quartz crystal in the HC-49/U through-hole package. It features a frequency tolerance of ±20 ppm and stability of ±30 ppm over the -10°C to +60°C operating range. Key electrical parameters include a maximum ESR of 35 Ω, parallel capacitance (C0) of ≤7 pF, and a maximum drive level of 1 mW. The component operates in fundamental mode with a typical annual aging rate of ±3 ppm.

Feature Summary

• Sealed HC-49/U metal can construction provides robust environmental protection against moisture and contaminants.
• Series resonance design eliminates the need for external load capacitors in standard oscillator circuits.
• Low equivalent series resistance ensures reliable startup performance across the specified temperature range.

Applications

• Microcontroller clock generation
• Serial communication interface timing
• General-purpose digital circuit oscillators

Procurement Notes

Verify that the target circuit topology supports series resonance crystals rather than parallel resonance types. Confirm that the driving circuitry limits power consumption below the 1 mW maximum drive level specification to prevent frequency drift or crystal damage. Ensure the PCB layout accommodates the specific dimensions of the HC-49/U package.

Selection Notes

Select this component when a cost-effective, high-stability through-hole solution is required for moderate temperature environments. It is suitable for applications where ±20 ppm initial accuracy is sufficient. Consider alternative packages if surface-mount constraints exist or if wider industrial temperature ranges are necessary.

Part Context

This part belongs to the IQD Frequency Products quartz crystal portfolio, which is now integrated under Würth Elektronik. The HC-49/U form factor represents a traditional through-hole standard widely used in legacy and industrial electronics designs requiring durable frequency control components.

Replacement Considerations

The Würth Elektronik part number 830003179B serves as a direct equivalent identifier for this component within the distributor ecosystem.

FAQ

Is this crystal designed for parallel or series resonance?

It is a series resonant crystal intended for use without external load capacitors.

What is the maximum drive level allowed?

The maximum drive level is 1 mW.