HC49USM-FF5F18-10.000MHZ

Crystals Overview

The HC49USM-FF5F18-10.000MHZ is a surface-mount quartz crystal unit manufactured by ILSI. It operates at a nominal frequency of 10 MHz with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 60 Ohms. The component provides a frequency stability and tolerance of ±30 ppm. Designed for base mode operation, it supports a temperature range of -40°C to +85°C. The physical dimensions are 13.3 mm in length, 4.73 mm in width, and a maximum height of 4.50 mm, housed in the HC-49/US package.

Crystals Feature Summary

• Surface mount construction within the HC-49/US package
• AT-cut quartz element for stable oscillation
• RoHS compliant manufacturing process

Crystals Applications

• General purpose clock generation circuits
• Microcontroller oscillator inputs
• Digital communication interface timing

Crystals Procurement Notes

Verify the specific suffix FF5F18 against the manufacturer's official datasheet to confirm exact electrical tolerances and aging rates. Ensure the ordering documentation specifies the correct tape and reel packaging configuration required for automated surface mount assembly processes.

Crystals Selection Notes

Select this component when a standard 10 MHz reference is required for surface mount applications. The 18 pF load capacitance must match the circuit design requirements. Verify that the ±30 ppm stability meets the system timing accuracy constraints and that the operating temperature range covers the intended environmental conditions.

Crystals Part Context

This part belongs to the HC49USM series of surface mount crystals from ILSI. These components utilize AT-cut quartz resonators encapsulated in metal cans designed for SMD mounting. The series offers various frequency options while maintaining consistent mechanical dimensions and electrical characteristics suitable for mass production electronics.

Crystals Replacement Considerations

Cross-reference with other manufacturers offering HC-49/US SMD packages. Confirm identical 10 MHz frequency, 18 pF load capacitance, and 60 Ohm ESR values. Verify compatibility with RoHS standards and ensure the replacement part supports the same -40°C to +85°C operating temperature range.