HC49US-FF3F18-8.000MHZ

Crystals Overview

The ILSI HC49US-FF3F18-8.000MHZ is a parallel fundamental quartz crystal resonator designed for surface mount applications. It operates at a nominal frequency of 8 MHz with a frequency tolerance and stability of ±30 ppm. The component features an 18 pF load capacitance and utilizes the HC-49/US package, measuring approximately 13.3 mm in length and 4.7 mm in width. It supports a minimum operating temperature of -20°C and is compliant with RoHS standards.

Crystals Feature Summary

• Parallel fundamental oscillation mode utilizing AT-cut quartz technology
• Surface mount construction within the standardized HC-49/US form factor
• Compliance with lead-free processing and RoHS environmental directives

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 suffix FF3F18 corresponds to the required surface mount configuration and thermal characteristics. Confirm that the ±30 ppm stability meets the system timing requirements. Ensure the 18 pF load capacitance matches the oscillator circuit design. Check for RoHS compliance documentation if restricted substances are a concern.

Crystals Selection Notes

Select this component when a surface mount solution is preferred over through-hole mounting for space-constrained designs. The HC-49/US package offers a balance between performance and footprint. Consider the -20°C lower temperature limit against the application environment. The 8 MHz frequency is suitable for standard baud rate generation and basic system clocks.

Crystals Part Context

This part belongs to the ILSI HC49US series of quartz crystals. The series includes various frequencies and packages, such as HC49U for through-hole and HC49US for surface mount variants. The model designation indicates specific electrical parameters including load capacitance and frequency tolerance.

Crystals Replacement Considerations

Compatible substitutes include other manufacturers' HC-49/US surface mount crystals with identical 8 MHz frequency, 18 pF load capacitance, and ±30 ppm tolerance. Verify pin compatibility and mechanical dimensions before substitution.