STDMUB10-32.768K

Overview

The STDMUB10-32.768K is a surface-mount tuning fork crystal manufactured by NDK, designed for precision timing applications requiring a nominal frequency of 32.768 kHz. It features a load capacitance of 12.5 pF and an equivalent series resistance (ESR) of 50 kOhms. The component operates within a temperature range of -40°C to +85°C and maintains a frequency tolerance of ±20 ppm at 25°C. This SMD package supports standard low-power real-time clock circuits.

Feature Summary

• Optimized for low-power real-time clock applications
• Designed for reliable operation in portable electronic devices
• Supports lead-free reflow soldering processes

Applications

• Real-time clock circuits in consumer electronics
• Portable communication devices
• Low-power industrial monitoring systems

Procurement Notes

Verify the complete part number suffix when ordering to ensure correct load capacitance and temperature range specifications. Confirm that the required ESR and drive power levels align with the target microcontroller's RTC port requirements before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring a standard 32.768 kHz reference with moderate accuracy. Ensure the host MCU can support the specified 50 kOhm ESR limit. Verify that the 12.5 pF load capacitance matches the circuit design without requiring external compensation capacitors.

Part Context

This model belongs to NDK's standard surface-mount crystal lineup, utilizing a tuning fork resonator structure. It serves as a foundational timing element for maintaining accurate timekeeping in battery-operated systems where power efficiency and stable oscillation are critical design constraints.

Replacement Considerations

Direct substitutes must match the 32.768 kHz frequency, 12.5 pF load capacitance, and 50 kOhm ESR. Verify package dimensions and pin configuration compatibility with existing PCB footprints before implementing any alternative components.