MU00523-32.768K

Overview

The MU00523-32.768K is a surface-mount crystal oscillator manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a fundamental frequency of 32.768 kHz with a load capacitance of 7 pF and an equivalent series resistance (ESR) of 70 kOhms. The component features a 2-SMD, no-lead package with dimensions of 1.6mm x 1.2mm x 0.55mm. Designed for base mode operation, it supports a temperature range of -40°C to +85°C and complies with RoHS3 standards.

Feature Summary

• Fundamental resonance mode operation for precise timing applications
• Compact 2-SMD no-lead surface mount package design
• Compliance with RoHS3 environmental regulations

Applications

• Real-time clock circuits in consumer electronics
• Microcontroller system clock sources
• Low-power embedded device timing references

Procurement Notes

Verify the specific package dimensions and lead-free status against the official datasheet before integration. Confirm that the 70 kOhm ESR aligns with the host circuit's drive level requirements to prevent over-driving or failure. Ensure the operating temperature range meets the final application environment specifications.

Selection Notes

Select this component when a low-frequency, high-stability timing reference is required in space-constrained designs. The 7 pF load capacitance must match the external circuit configuration. Consider the 70 kOhm ESR value as it impacts the oscillation stability and startup time within the target application circuit.

Part Context

This part belongs to NDK's general-purpose crystal lineup, specifically designed for surface-mount assembly. It serves as a standard timing element for digital systems requiring a 32.768 kHz reference signal. The component is distinct from higher-frequency MHz-range crystals and specialized oscillator modules.

Replacement Considerations

Cross-reference with other 32.768 kHz SMD crystals offering identical 7 pF load capacitance and compatible ESR values. Verify mechanical footprint compatibility with the existing PCB layout. Ensure thermal performance matches the original specification if operating in extreme environments.