STDCSU1-8M

Overview

The STDCSU1-8M is a surface-mount MHz crystal manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a nominal frequency of 8 MHz with a frequency stability of ±50ppm and a load capacitance of 8pF. The component features an equivalent series resistance (ESR) of 300 Ohms maximum. It utilizes a 2-SMD, No Lead package configuration with dimensions of 2.0mm x 1.2mm. The device supports fundamental mode operation and is rated for a temperature range of -40°C to +85°C. It complies with RoHS standards and holds an MSL rating of Level 1.

Feature Summary

• Compact 2-SMD footprint designed for space-constrained surface mount applications
• Fundamental oscillation mode ensuring stable timing signals
• Compliant with lead-free reflow soldering processes

Applications

• General purpose clock generation in consumer electronics
• Timing reference for microcontroller units
• Signal synchronization in portable devices

Procurement Notes

Verify the specific ESR value and tolerance requirements against your circuit design before procurement. Confirm that the 2-SMD package dimensions align with your PCB layout constraints. Ensure compatibility with standard lead-free reflow profiles as specified in the manufacturer datasheet. Check for any specific handling instructions related to the no-lead package type during assembly.

Selection Notes

Select this component when a compact 8 MHz timing source is required with moderate stability needs. The 300 Ohm ESR may necessitate specific oscillator circuit tuning compared to lower ESR alternatives. Consider the -40°C to +85°C operating range for environmental suitability. Evaluate if the 2-SMD form factor offers sufficient mechanical reliability for the intended application environment.

Part Context

This part belongs to NDK's SMD crystal lineup, focusing on miniaturization for modern electronic assemblies. It serves as a passive frequency control element within larger timing circuits. The product line emphasizes compliance with environmental regulations while maintaining performance in standard commercial temperature ranges.

Replacement Considerations

Direct substitutes must match the 8 MHz frequency, 8pF load capacitance, and 2-SMD package. Verify ESR limits and temperature range compatibility. Cross-reference with other manufacturers offering similar small-footprint crystals.