MXT77FI32K768

Crystals Overview

The MXT77FI32K768 is a surface-mount crystal unit manufactured by Meritek Electronics Corporation. It operates at a nominal frequency of 32.768 kHz with a frequency tolerance of ±20ppm. The component features a load capacitance of 7pF and an equivalent series resistance (ESR) of 50 kOhms. It utilizes a 4-SMD, flat lead package configuration with dimensions of 6.9x1.4x1.3mm. This device is designed for precision timing applications requiring stable oscillation.

Crystals Feature Summary

• Provides precise timing stability with a frequency tolerance of ±20ppm
• Utilizes a compact surface-mount package design for automated assembly
• Operates at the standard 32.768 kHz frequency for clock generation

Crystals Applications

• Precision timing circuits
• Real-time clock modules
• Microcontroller oscillator sources

Crystals Procurement Notes

Verify the specific load capacitance requirement of 7pF against the target circuit design to ensure accurate frequency performance. Confirm that the application environment supports the specified ESR of 50 kOhms. Ensure the PCB footprint matches the 4-SMD flat lead package dimensions provided in the official datasheet to prevent mechanical mounting issues.

Crystals Selection Notes

Select this component when a 32.768 kHz reference is required with a ±20ppm tolerance. Consider the 7pF load capacitance compatibility with the host oscillator circuit. Evaluate the physical space constraints as the package measures 6.9x1.4x1.3mm. Verify that the 50 kOhms ESR aligns with the drive level specifications of the intended microcontroller or timer interface.

Crystals Part Context

This part belongs to the MXT7 series of 32.768 kHz crystal units from Meritek. The series offers various load capacitance options and package styles. The MXT77FI32K768 specifically denotes the 7pF load capacitance variant within the 4-SMD flat lead form factor. It serves as a dedicated timing element for low-power digital systems.

Crystals Replacement Considerations

Cross-reference with other Meritek MXT7 series parts such as MXT77FI32K768-DG if different suffixes indicate packaging variations. Ensure any substitute maintains the 32.768 kHz frequency, 7pF load capacitance, and 4-SMD flat package dimensions. Verify identical electrical parameters including ±20ppm tolerance and 50 kOhms ESR before implementation.