STDMUA8-32.768K

Overview

The STDMUA8-32.768K is a surface-mount quartz crystal manufactured by NDK, designed for precision timing applications. It operates at a nominal frequency of 32.768 kHz with a fundamental oscillation mode. The component features a load capacitance of 12.5 pF and a maximum equivalent series resistance (ESR) of 70 kOhms. Frequency tolerance is specified at ±20 ppm, while frequency stability is rated at ±50 ppm over the operating temperature range of -40°C to +85°C. The device utilizes a compact 2-SMD no-lead package with dimensions of 3.20mm x 1.50mm and a maximum height of 0.90mm.

Feature Summary

• Compact 2-SMD no-lead package design suitable for space-constrained surface-mount assemblies
• Fundamental mode operation providing stable timing signals for low-frequency clock applications
• Compliance with AEC-Q200 qualification standards ensuring reliability in automotive environments

Applications

• Real-time clock circuits in consumer electronics
• Microcontroller system clocks requiring precise timekeeping
• Automotive electronic control units (ECUs)
• Portable devices utilizing battery-powered low-power timing sources

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tolerance specifications. Confirm that the required frequency tolerance and ESR values align with the target circuit design before procurement. Check RoHS3 compliance status if environmental regulations apply to the final product assembly.

Selection Notes

Select this component when a small footprint is critical due to its 3.20mm x 1.50mm dimensions. Ensure the application requires a fundamental mode crystal with a 12.5pF load capacitance. Verify that the operating temperature range of -40°C to +85°C meets the environmental requirements of the end-use device.

Part Context

This part belongs to the NX3215SA series from NDK, which focuses on high-reliability SMD crystals. The series is engineered for mass production using proprietary quartz technology. It serves as a standard timing element for various digital systems requiring accurate 32.768 kHz reference frequencies.

Replacement Considerations

Cross-reference with other NX3215SA variants from NDK for different tolerances or packaging options. Verify pin compatibility and electrical parameters when considering substitutes from other manufacturers.