HC49US-FF5F18-6.1440MHZ

Crystals Overview

The ILSI HC49US-FF5F18-6.1440MHZ is a parallel fundamental mode quartz crystal resonator operating at a nominal frequency of 6.144 MHz. It features a ±30 ppm frequency tolerance and stability, with an equivalent series resistance (ESR) of 100 Ohms. Designed for through-hole mounting in the standard HC-49/US package, it supports a load capacitance of 18 pF. The component operates within a temperature range of -40°C to +85°C and complies with RoHS standards.

Crystals Feature Summary

• Fundamental mode quartz crystal operation
• Through-hole mounting capability
• RoHS compliant construction

Crystals Applications

• Sonet/SDH system clocking
• T1/E1 and T3/E3 network interfaces
• Fibre Channel server storage systems

Crystals Procurement Notes

Verify the specific suffix FF5F18 against official ILSI documentation to confirm the exact load capacitance and ESR specifications. Ensure that the procurement channel provides genuine components with traceable manufacturing dates. Confirm compliance requirements such as RoHS status are explicitly stated in the supplier's certificate of conformity before finalizing orders.

Crystals Selection Notes

Select this component when a fundamental mode crystal is required for 6.144 MHz applications. The HC-49/US package suits through-hole PCB designs requiring robust mechanical stability. Consider the 100 Ohm ESR and 18 pF load capacitance to ensure compatibility with the oscillator circuit design. Verify that the ±30 ppm tolerance meets the system's timing accuracy requirements.

Crystals Part Context

This part belongs to the HC49US series of quartz crystals manufactured by ILSI America. The series offers various frequencies and tolerances in a standardized through-hole package. These components are widely used in telecommunications and data communication equipment where reliable frequency generation is critical for signal integrity and synchronization.

Crystals Replacement Considerations

Cross-reference with other manufacturers offering HC-49/US packaged crystals at 6.144 MHz. Ensure substitute parts match the 18 pF load capacitance and similar ESR values. Verify that alternative components support the same operating temperature range and frequency tolerance specifications.