HC49US-FF5F18-10.000MHZ

Crystals Overview

The ILSI HC49US-FF5F18-10.000MHZ is a surface-mount MHz crystal operating at a nominal frequency of 10 MHz. It features a frequency tolerance and stability of ±30ppm with a load capacitance of 18pF. The component utilizes an HC-49/US package, measuring 11.40mm in length, 4.73mm in width, and up to 4.50mm in height. It exhibits an equivalent series resistance (ESR) of 60 Ohms and supports a base harmonic operating mode within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• Surface mount construction utilizing the standard HC-49/US package format
• Base harmonic operation mode for fundamental frequency generation
• AT-cut quartz design ensuring stable performance across industrial temperature ranges

Crystals Applications

• General purpose clock signal generation in digital circuits
• Microcontroller and microprocessor system timing references
• Communication interface synchronization modules

Crystals Procurement Notes

Verify that the specific part number suffix matches the required frequency tolerance and load capacitance specifications for the target circuit design. Confirm that the surface mount footprint aligns with the PCB layout requirements for the HC-49/US package dimensions. Ensure compatibility with reflow soldering profiles suitable for lead-free processing standards.

Crystals Selection Notes

Select this component when a 10 MHz reference signal is required with moderate stability needs. The 60 Ohm ESR value must be compatible with the oscillator circuit's drive level limitations. Consider the physical size constraints of the application against the 11.40mm x 4.73mm package dimensions before finalizing the design.

Crystals Part Context

This component belongs to the HC49US series of quartz crystals manufactured by ILSI America. The series offers various frequency options within the HC-49/US form factor, providing a standardized solution for surface-mount applications requiring reliable frequency control without the complexity of active oscillators.

Crystals Replacement Considerations

Cross-reference with other manufacturers offering HC-49/US SMD crystals at 10 MHz with ±30ppm tolerance and 18pF load capacitance. Verify mechanical footprint compatibility and electrical parameters such as ESR and drive level sensitivity before substitution.