HC49US-FF3F18-14.31818MHZ

Crystals Overview

The HC49US-FF3F18-14.31818MHZ is a quartz crystal resonator manufactured by ILSI America, designed for surface-mount applications within the HC-49/US package. It operates at a nominal frequency of 14.31818 MHz with a base harmonic mode. The component exhibits a frequency tolerance and stability of ±30 ppm and features a load capacitance of 18 pF. Its equivalent series resistance (ESR) is specified at 40 Ohms. The device supports an operating temperature range of -20°C to +70°C and is housed in a compact SMD form factor measuring approximately 11.4mm x 4.7mm.

Crystals Feature Summary

• Surface-mount construction utilizing the standard HC-49/US package format
• Quartz resonator technology ensuring stable base harmonic operation
• Frequency stability maintained within ±30 ppm tolerance limits

Crystals Applications

• Clock signal generation for microcontroller units
• Timing references for serial communication interfaces
• Frequency control circuits in consumer electronics

Crystals Procurement Notes

Verify the specific suffix FF3F18 against project requirements to ensure compatibility with existing PCB footprints and circuit loading conditions. Confirm that the -20°C to +70°C operating temperature range aligns with the environmental specifications of the final assembly. Cross-reference the 40 Ohm ESR value with oscillator design constraints to guarantee reliable startup and sustained oscillation performance.

Crystals Selection Notes

Select this component when a precise 14.31818 MHz reference is required for digital logic timing or data transmission standards. The HC-49/US SMD package offers a balance between mechanical robustness and space efficiency compared to through-hole alternatives. Ensure the 18 pF load capacitance matches the oscillator circuit design to achieve the specified ±30 ppm accuracy without requiring external trimming adjustments.

Crystals Part Context

This part belongs to the HC49US series of quartz crystals produced by ILSI America, a supplier established in 1987 specializing in frequency control products. The series utilizes standard quartz resonator materials to provide reliable timing solutions for various electronic applications. ILSI's global presence supports distribution across North America, Asia, and Europe, ensuring availability for industrial and commercial manufacturing needs.

Crystals Replacement Considerations

Direct substitutes include the HC49US-FF3F18-14.31818 variant, which shares identical electrical parameters and physical dimensions. Other compatible options from different manufacturers must match the 14.31818 MHz frequency, 18 pF load capacitance, 40 Ohm ESR, and HC-49/US SMD package to ensure functional interchangeability.