MXT49FI32K768

Crystals Overview

The MXT49FI32K768 is a fundamental quartz crystal manufactured by Meritek, designed for surface-mount applications. It operates at a nominal frequency of 32.768 kHz with a tolerance of ±20 ppm at normal temperature. The component features a load capacitance of 9 pF and an equivalent series resistance (ESR) of 70 kOhms. It is housed in a compact SMD4115-2P package, also described as 2-SMD, No Lead. The device supports an operating temperature range from -40°C to +85°C and complies with RoHS standards.

Crystals Feature Summary

• Fundamental tuning fork quartz crystal construction
• Surface-mount design in SMD4115-2P package
• RoHS compliant manufacturing

Crystals Applications

• Real-time clock circuits
• Microcontroller timing references
• Low-power embedded systems

Crystals Procurement Notes

Verify the specific package designation SMD4115-2P against schematic footprints prior to ordering. Confirm that the ±20 ppm frequency tolerance meets system requirements. Ensure the 70 kOhm ESR value is compatible with the oscillator circuit design. Check RoHS compliance status if required by project specifications.

Crystals Selection Notes

Select this component when a low-frequency surface-mount crystal is required for timekeeping or synchronization. The 32.768 kHz frequency is standard for binary division in digital clocks. Consider the -40°C to +85°C temperature range for industrial or consumer environments. The high ESR suggests suitability for specific low-drive oscillator topologies.

Crystals Part Context

This part belongs to the Meritek MXT4 series of passive components. It is distinct from oscillator modules like the MXTV6FI32K768, which are active devices. The MXT49FI32K768 is a passive resonator requiring external amplifier circuitry to function.

Crystals Replacement Considerations

Direct substitutes must match the 32.768 kHz frequency, 9 pF load capacitance, and SMD4115-2P footprint. Verify equivalent ESR and temperature range specifications before substitution.