HC49US-FF5F18-8.000MHZ

Crystals Overview

The ILSI HC49US-FF5F18-8.000MHZ is a parallel fundamental quartz crystal operating at a nominal frequency of 8 MHz. It features a frequency tolerance and stability of ±30 ppm with an 18 pF load capacitance. The component utilizes an AT-cut design for low aging, specified at 5 ppm per year. It operates within a temperature range of -40°C to +85°C and supports a maximum drive level of 1 mW. The unit is housed in a standard HC-49/US metal package with dimensions of approximately 11.05 mm x 4.65 mm x 13.45 mm.

Crystals Feature Summary

• Parallel fundamental resonance mode utilizing AT-cut quartz technology
• Low aging characteristic ensuring long-term frequency stability
• RoHS compliant construction compatible with lead-free processing

Crystals Applications

• Microcontroller clock sources
• Communication interface timing circuits
• General-purpose digital logic synchronization

Crystals Procurement Notes

Verify the specific manufacturer designation upon receipt, as distribution channels may list this part under alternative branding such as Abracon while maintaining identical electrical specifications. Confirm that the received components match the HC-49/US form factor and 18 pF load capacitance requirements. Ensure storage conditions remain within specified limits to preserve the integrity of the sealed metal canister before soldering.

Crystals Selection Notes

Select this component when a surface-mount or through-hole compatible crystal is required for 8 MHz applications needing ±30 ppm accuracy. The HC-49/US package offers robust mechanical protection compared to smaller SMD variants. Consider the 1 mW drive level limit to prevent over-driving the crystal in high-gain oscillator circuits. Verify compatibility with the target circuit's load capacitance network.

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 for various electronic systems. The HC-49/US package is a widely adopted industry standard for both through-hole and surface-mount implementations, offering a balance of performance and physical durability.

Crystals Replacement Considerations

Cross-reference with HC49USM-FF5F18-8.000MHZ from other manufacturers if sourcing constraints exist. Ensure substitute parts maintain the same 18 pF load capacitance and ±30 ppm tolerance. Verify that alternative packages retain the HC-49/US footprint for direct board replacement.