HC49US-FF3F18-4.9152MHZ

Crystals Overview

The ILSI HC49US-FF3F18-4.9152MHZ is a parallel fundamental quartz crystal operating at a nominal frequency of 4.9152 MHz. It utilizes the HC-49/US through-hole metal package, measuring approximately 11 mm by 4.7 mm. The component features an 18 pF load capacitance and maintains both frequency tolerance and stability at ±30 ppm. Designed for robust performance, it supports a temperature range from -20°C to +70°C and complies with RoHS standards for lead-free processing.

Crystals Feature Summary

• Parallel fundamental resonance mode operation
• HC-49/US metal can construction
• AT-cut quartz element design
• RoHS compliant manufacturing

Crystals Applications

• T1/E1 system clock generation
• Sonet/SDH network synchronization
• General-purpose timing circuits

Crystals Procurement Notes

Verify that the specific suffix FF3F18 corresponds to the required 18 pF load capacitance and ±30 ppm tolerance specifications. Confirm the HC-49US package dimensions align with the target PCB footprint. Ensure the operating temperature range meets the environmental requirements of the final assembly. Cross-reference the datasheet to validate the parallel fundamental configuration against circuit design needs.

Crystals Selection Notes

Select this component when a stable 4.9152 MHz reference is required for digital communication interfaces. The HC-49US package offers reliable mechanical protection compared to ceramic variants. Consider the ±30 ppm stability limit for applications requiring precise clock alignment. This fundamental mode crystal is suitable for standard oscillator circuits without overtone complexity.

Crystals Part Context

This part belongs to the HC49US series of parallel fundamental quartz crystals manufactured by ILSI America. The series provides standardized timing solutions using AT-cut quartz elements in durable metal housings. These components are engineered for compatibility with lead-free soldering processes and offer consistent electrical characteristics across production batches.

Crystals Replacement Considerations

Direct substitutes must match the 4.9152 MHz frequency, 18 pF load capacitance, and HC-49US package form factor. Verify equivalent frequency tolerance and stability ratings to ensure circuit performance remains within specification limits.