STDMUA19-32.768K

Overview

The STDMUA19-32.768K is a surface-mount tuning fork crystal manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a fundamental frequency of 32.768 kHz with a load capacitance of 6 pF and an equivalent series resistance of 20 kOhms. The component provides a frequency tolerance of ±20 ppm and stability of ±20 ppm across a temperature range of -40°C to +85°C. Housed in a compact 2-SMD, No Lead package measuring 3.20mm x 1.50mm with a maximum height of 0.90mm, it utilizes the NX3215SA series design for reliable timekeeping applications.

Feature Summary

• Compact 3.2mm x 1.5mm SMD footprint optimized for space-constrained designs
• High-stability quartz resonator suitable for precise clock generation
• Automotive-grade reliability with wide operating temperature range

Applications

• Real-time clock circuits in consumer electronics
• Timekeeping modules in automotive infotainment systems
• Low-power embedded system oscillators

Procurement Notes

Verify the specific suffix configuration against the manufacturer's current datasheet to ensure compatibility with required load capacitance and tolerance specifications. Confirm that the 6pF load capacitance aligns with the host circuit's oscillator design parameters before integration into production assemblies.

Selection Notes

Select this component when a small form factor is critical for the application layout. The 20kOhm ESR requires careful matching with the oscillator circuit's drive level constraints. Ensure the PCB pad layout strictly adheres to the recommended land pattern for the 3.2x1.5mm package to guarantee solder joint integrity during reflow processes.

Part Context

This part belongs to the NX3215SA series of tuning fork crystals designed for low-frequency timing applications. NDK manufactures these components using proprietary synthetic quartz cultivation techniques, ensuring high frequency stability and long-term aging performance compared to standard industrial alternatives.

Replacement Considerations

Direct substitutes include STDMUA8-32.768K, which shares the same series but differs in load capacitance and physical dimensions. Verify pinout compatibility and electrical parameter alignment before swapping.