LFXTAL034654

Overview

The LFXTAL034654 is a quartz crystal resonator manufactured by IQD Frequency Products, belonging to the HC49/4HSMX series. It operates at a nominal frequency of 4 MHz with a load capacitance of 18 pF. The component features a frequency tolerance of ±20 ppm and a frequency stability of ±50 ppm over the operating temperature range. It utilizes an HC-49 package style with radial leads spaced at 4.88 mm for through-hole mounting. The equivalent series resistance (ESR) is specified as 130 Ohms, and the drive level is limited to 1 mW. The unit supports a standard operating temperature range from -40°C to +85°C.

Feature Summary

• Provides stable oscillation at 4 MHz using a fundamental mode quartz resonator element housed in a robust HC-49/4HSMX metal can package.
• Designed for through-hole integration with radial lead configuration, ensuring compatibility with standard printed circuit board layouts.

Applications

• Microcontroller clock generation circuits
• Serial communication interface timing sources
• General-purpose digital logic timing references

Procurement Notes

Verify the specific suffix designation against the manufacturer's current datasheet to confirm exact tolerance and stability grades, as variations may exist within the HC49/4HSMX product line. Ensure that the application circuit design adheres to the maximum drive level specification of 1 mW to prevent frequency drift or crystal damage. Confirm that the load capacitance requirements of the host oscillator circuit match the 18 pF rating of this component for accurate frequency performance.

Selection Notes

Select this component when a through-hole quartz crystal is required for 4 MHz applications with moderate stability needs. The HC49/4HSMX package offers mechanical protection suitable for industrial environments. Consider the 130 Ohm ESR value when designing the oscillator circuit to ensure reliable startup conditions. This part is appropriate for general electronics where surface mount options are not feasible or where higher power handling than SMD crystals allows is needed.

Part Context

The LFXTAL034654 is part of IQD Frequency Products' extensive portfolio of quartz crystal resonators. IQD is a recognized supplier of frequency control components, providing solutions for various industries including automotive, industrial, and consumer electronics. This specific model represents a standard through-hole option within their HC49 family, catering to designs requiring reliable timing references without the constraints of surface mount technology.

Replacement Considerations

Direct substitutes include other HC-49/4H crystals with identical 4 MHz frequency, 18 pF load capacitance, and similar ESR values. Verify pin spacing and physical dimensions to ensure mechanical fit. Cross-reference with other manufacturers offering HC-49 packages, ensuring compliance with the same electrical specifications and temperature range requirements.