STDCRA1-12M

Overview

STDCRA1-12M is a surface-mount crystal resonator manufactured by NDK, belonging to the NX3225SA series. It operates at a fundamental frequency of 12 MHz with a load capacitance of 8 pF and an equivalent series resistance (ESR) of 300 Ohms. The component features a frequency tolerance of ±50 ppm and functions within a temperature range of -40°C to +125°C. It utilizes a 4-SMD, no-lead package with dimensions of 3.20mm x 2.50mm x 0.60mm maximum height.

Feature Summary

• High-temperature stability suitable for demanding automotive environments
• Miniature surface-mount design for space-constrained applications
• Fundamental mode operation for precise timing control

Applications

• Automotive electronic systems requiring wide temperature range compliance
• Microcontroller clock sources in industrial control units
• Communication modules operating under harsh environmental conditions

Procurement Notes

Verify the specific datasheet version (e.g., STD-CSR-1 or similar) when sourcing, as NDK may update documentation without changing the part number immediately. Confirm that the 300 Ohm ESR matches your oscillator circuit requirements, as this value is higher than standard consumer-grade crystals. Ensure the 4-SMD footprint aligns with your PCB layout guidelines before finalizing procurement orders.

Selection Notes

Select this component when a 12 MHz reference signal is required in applications exposed to temperatures up to 125°C. The ±50 ppm tolerance is appropriate for general-purpose timing rather than high-precision communication links. Consider the 300 Ohm ESR during circuit design to ensure sufficient drive level and stable oscillation start-up characteristics within the target application environment.

Part Context

The STDCRA1-12M belongs to NDK's NX3225SA family, which specializes in miniature crystal resonators. This series is engineered to meet AEC-Q200 standards for automotive reliability. The 3.2x2.5mm form factor allows for dense PCB mounting while maintaining the mechanical robustness necessary for vibration-prone environments typical in modern vehicle electronics and industrial machinery.

Replacement Considerations

Cross-reference with other NX3225SA series variants from NDK if different tolerances are needed. Verify compatibility with alternative manufacturers offering 3.2x2.5mm 12MHz crystals with comparable ESR and temperature ratings. No direct public substitute part numbers are confirmed in the provided source data.