LFXTAL003185B

Overview

The LFXTAL003185B is a quartz crystal resonator manufactured by IQD Frequency Products, designed for through-hole mounting in the HC-49/US package. It operates at a nominal frequency of 20 MHz with a load capacitance of 12 pF. The component exhibits a frequency tolerance of ±30 ppm and a frequency stability of ±50 ppm. Key electrical parameters include an equivalent series resistance (ESR) of 40 Ohms and a drive level of 0.5 mW. The device supports a standard leaded configuration with a 4.88 mm lead spacing.

Feature Summary

• Industry-standard leaded crystal construction suitable for traditional printed circuit board layouts.
• HC-49/US package format providing robust mechanical support for through-hole assembly processes.

Applications

• Microcontroller clock generation circuits
• Digital logic timing references
• General-purpose electronic instrumentation

Procurement Notes

Verify the specific suffix 'B' against the manufacturer's current datasheet to confirm packaging details and availability status. Ensure that the HC-49/US footprint matches the target PCB design requirements. Cross-reference the ESR and drive level specifications with the oscillator circuit design to prevent overdriving or failure to start. Confirm RoHS compliance status if required by the final product regulations.

Selection Notes

Select this component when a 20 MHz reference is required for through-hole applications. The 12 pF load capacitance must match the external capacitors used in the oscillator circuit to ensure accurate frequency operation. Consider the ±30 ppm tolerance for applications requiring moderate precision. The 40 Ohm ESR value should be compatible with the driving gate impedance of the host microcontroller or logic family.

Part Context

This part belongs to the LFXTAL series of quartz crystals from IQD Frequency Products. IQD is a specialist in frequency control products, offering a wide range of crystals and oscillators for various industries including automotive, industrial, and consumer electronics. The HC-49/US series represents a long-standing standard form factor widely used in legacy and modern designs alike.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative HC-49/US 20 MHz crystals based on matching load capacitance, ESR, and frequency tolerance specifications before substitution.