STDCSU1-9.84375M

Overview

The STDCSU1-9.84375M is a surface-mount MHz crystal manufactured by NDK (NIHON DEMPA KOGYO CO., LTD). It operates at a nominal frequency of 9.84375 MHz with a fundamental oscillation mode. The component features a load capacitance of 8 pF and an equivalent series resistance of 220 Ohms. Frequency tolerance is specified at ±50 ppm, with stability also rated at ±50 ppm. It utilizes a 2-SMD, No Lead package measuring 5.00mm x 3.20mm in size and 1.50mm in maximum height. The device supports a standard lead time of 16 weeks.

Feature Summary

• Fundamental mode operation for stable frequency generation
• Compact 2-SMD no-lead surface mount packaging
• RoHS compliant construction without halogenated materials

Applications

• General purpose clock signal generation
• Microcontroller system timing references
• Embedded digital circuit synchronization

Procurement Notes

Verify the specific ordering suffix against the official NDK datasheet to ensure correct frequency and tolerance specifications. Confirm that the selected variant matches the required load capacitance and package dimensions for the target PCB layout. Check current availability status as supply levels may fluctuate. Ensure compliance with project-specific environmental regulations such as RoHS requirements before finalizing procurement orders.

Selection Notes

Select this component when a 9.84375 MHz fundamental frequency is required within a compact 2-SMD footprint. Consider the 220 Ohm ESR value for oscillator circuit design compatibility. Verify that the ±50 ppm stability meets the application's timing accuracy requirements. Ensure the operating temperature range aligns with the intended environment. Compare against alternative packages if space constraints differ from the 5.00mm x 3.20mm dimension.

Part Context

This part belongs to the broader category of passive electronic components, specifically crystals and resonators used for frequency control. It is designed for surface mount technology applications requiring precise timing signals. The manufacturer NDK specializes in quartz crystal devices for various industrial and consumer electronics markets.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the official NDK datasheet or authorized distributors for direct replacements or pin-compatible alternatives.