STDMUD1-32.768K

Overview

The STDMUD1-32.768K is a surface-mount crystal oscillator manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a nominal frequency of 32.768 kHz with a frequency tolerance of ±20 ppm. The component features a load capacitance of 12.5 pF and an equivalent series resistance of 90 kOhms. It utilizes a 2-SMD, No Lead package configuration. The device is designed for reliable operation across a temperature range of -40°C to 85°C.

Feature Summary

• Surface mount construction suitable for automated assembly processes
• Optimized frequency stability for real-time clock applications
• Compact footprint design minimizing board space requirements

Applications

• Real-time clock circuits in embedded systems
• Timekeeping modules for consumer electronics
• Low-power wearable device synchronization

Procurement Notes

Verify the specific ordering suffix against official NDK documentation to ensure correct frequency tolerance and packaging specifications. Confirm that the requested variant matches the required load capacitance and operating temperature range for your target application environment. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a precise 32.768 kHz reference is required for timekeeping functions. Ensure the circuit design accommodates the specified 12.5 pF load capacitance to maintain accuracy within ±20 ppm limits. Consider the 90 kOhm ESR value when designing oscillator feedback networks for stable startup conditions.

Part Context

This crystal belongs to NDK's standard surface-mount product line, providing essential timing references for microcontroller-based systems. It serves as a fundamental passive component for maintaining accurate time intervals in digital logic circuits where low power consumption and long-term stability are critical operational requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult NDK technical support or authorized distributor databases for direct equivalents with matching electrical parameters and mechanical dimensions.