MU00989-32.768K

Overview

The MU00989-32.768K is a surface-mount crystal resonator manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a fundamental frequency of 32.768 kHz with a frequency tolerance and stability of ±20 ppm. The component features a load capacitance of 12.5 pF and an equivalent series resistance (ESR) of 40 kOhms. It utilizes a 2-SMD, no-lead package with dimensions of 3.20 mm in length, 1.50 mm in width, and a maximum height of 0.90 mm. The device is designed for base mode operation within a temperature range of -40°C to 85°C.

Feature Summary

• Compact 2-SMD no-lead package suitable for space-constrained designs
• High-frequency stability with ±20 ppm tolerance
• Wide operating temperature range for environmental resilience

Applications

• Real-time clock circuits
• Microcontroller system clocks
• Portable electronic devices

Procurement Notes

Verify the specific package dimensions and electrical parameters against the official NDK datasheet before integration. Confirm that the target application circuit matches the 12.5 pF load capacitance requirement. Ensure the supplier provides documentation confirming compliance with RoHS standards. Cross-reference the manufacturer part number to avoid confusion with similar series components.

Selection Notes

Select this component when a low-power, high-stability 32.768 kHz reference is required for timekeeping or synchronization. The small footprint makes it ideal for compact consumer electronics. Consider the ESR value to ensure compatibility with the oscillator circuit's drive level requirements. Evaluate the temperature range to confirm suitability for the intended operational environment.

Part Context

This component belongs to NDK's portfolio of quartz crystal resonators, which are widely used in mobile communications, automotive electronics, and IoT applications. NDK leverages its expertise in artificial crystal cultivation to produce components with high frequency stability. The company maintains manufacturing facilities globally, including significant production capacity in China, ensuring consistent quality and supply chain reliability for these standard timing elements.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in the provided source material.