LFXTAL078434B

Overview

LFXTAL078434B is a quartz crystal resonator manufactured by IQD Frequency Products, operating at a fundamental frequency of 20.0 MHz with a frequency tolerance of ±20 ppm. It features a load capacitance of 20 pF and an equivalent series resistance (ESR) of 40 Ohms. The component utilizes the HC-49/US package style, measuring 11.35 mm in length and 4.85 mm in width. Designed for surface mount installation, it supports a standard operating temperature range of -10°C to +60°C. The device is RoHS compliant and currently active in production.

Feature Summary

• Fundamental mode operation ensures stable oscillation characteristics for clock generation applications.
• HC-49/US form factor provides compatibility with established surface mount footprints.
• Low equivalent series resistance supports efficient energy transfer within oscillator circuits.

Applications

• Microcontroller clock source generation
• Communication interface timing references
• General-purpose digital circuit synchronization

Procurement Notes

Verify that the specific variant matches the required HC-49/US dimensions and lead configuration. Confirm that the 20pF load capacitance aligns with the target oscillator circuit design to maintain the specified ±20 ppm accuracy. Ensure the operating temperature range meets the environmental requirements of the final assembly.

Selection Notes

Select this component when a standard 20 MHz reference is required in a compact surface mount format. Consider the ±20 ppm stability for general digital logic timing. Evaluate the 40 Ohm ESR against the oscillator amplifier's drive level specifications to prevent over-driving the crystal.

Part Context

This part belongs to the broad category of quartz crystal resonators offered by IQD Frequency Products. These components serve as essential frequency-determining elements in electronic systems requiring precise timing signals. The manufacturer provides various packages and frequencies to support diverse consumer and industrial electronics designs.

Replacement Considerations

Cross-reference with other 20 MHz crystals in the HC-49/US package from IQD or alternative manufacturers. Verify identical electrical parameters including load capacitance, ESR, and frequency tolerance before substitution.