HC49USM-FF3F18-10.000MHZ

Crystals Overview

The HC49USM-FF3F18-10.000MHZ is a surface-mount parallel fundamental quartz crystal manufactured by ILSI America. It operates at a nominal frequency of 10 MHz with a load capacitance of 18 pF and a maximum equivalent series resistance (ESR) of 60 Ohms. The component offers a frequency tolerance and stability of ±30 ppm at 25°C, utilizing an AT-cut resonator element. Designed for the HC-49/US package, it measures 11.40 mm in length, 4.73 mm in width, and has a maximum height of 4.50 mm. It supports a drive level of 1 mW and functions within an operating temperature range of -40°C to +85°C.

Crystals Feature Summary

• Surface-mount construction compatible with automated pick-and-place assembly processes
• Low EMI grounded metal package design for enhanced signal integrity
• RoHS compliant manufacturing process supporting lead-free soldering requirements

Crystals Applications

• SONET/SDH system clock generation
• T1/E1 and T3/E3 telecommunications interfaces
• Wi-Fi and 802.11 wireless communication modules

Crystals Procurement Notes

Verify that the specific suffix matches the required frequency tolerance and stability specifications for the target application. Confirm the package orientation and pin compatibility during PCB layout integration. Ensure storage conditions adhere to manufacturer guidelines to maintain frequency accuracy prior to soldering.

Crystals Selection Notes

Select this component when a standard 10 MHz reference is required for high-reliability digital systems. The 18 pF load capacitance must match the oscillator circuit design. Consider the 60 Ohm ESR limit to ensure proper oscillation startup and sustained operation within the specified thermal environment.

Crystals Part Context

This part belongs to the HC49USM series, which provides surface-mount alternatives to traditional through-hole crystals. The series is engineered for compact electronics requiring stable frequency references in space-constrained designs while maintaining performance standards comparable to larger packages.

Crystals Replacement Considerations

Direct substitutes include other HC-49/US SMD crystals with identical 10 MHz frequency, 18 pF load capacitance, and ±30 ppm tolerance. Verify mechanical footprint compatibility and electrical parameters before cross-referencing.