LFXTAL078427B

Overview

The LFXTAL078427B is a through-hole quartz crystal manufactured by IQD Frequency Products, housed in an HC-49/US package. It operates at a fundamental frequency of 8.0 MHz with a load capacitance of 18 pF. The component features a frequency tolerance and stability of ±20 ppm and an equivalent series resistance (ESR) of 50 Ohms. Designed for industrial applications, it functions within a temperature range of -20°C to +70°C. The unit utilizes radial leads for mounting and has physical dimensions of 11.35 mm in length, 4.85 mm in width, and a maximum seated height of 3.70 mm.

Feature Summary

• HC-49/US through-hole package design
• Fundamental mode operation at 8.0 MHz
• Industrial temperature range capability

Applications

• General-purpose timing circuits
• Microcontroller clock sources
• Industrial control systems

Procurement Notes

Verify the specific suffix and revision level against the manufacturer's latest documentation to ensure compatibility with current production standards. Confirm that the HC-49/US package dimensions align with the target PCB footprint. Check RoHS compliance status and lead material specifications if required by project constraints. Ensure the operating temperature range meets the environmental requirements of the final assembly.

Selection Notes

Select this component when a standard through-hole crystal is required for 8.0 MHz applications. The HC-49/US form factor provides robust mechanical stability for wave soldering or manual insertion processes. Consider the 18 pF load capacitance requirement for oscillator circuit design. Evaluate the ESR value against the driving circuit capabilities to prevent over-driving the crystal.

Part Context

This part belongs to the IQD Frequency Products quartz crystal portfolio, which includes various SMD and THT options. The HC-49 series is a traditional package style widely used in legacy and industrial electronics. IQD supplies these components as part of their broader frequency control solutions, serving sectors such as computing, consumer, and industrial markets.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.