9C-28.800MBBK-T

Crystals Overview

The 9C-28.800MBBK-T is a fundamental mode quartz crystal manufactured by TXC Corporation, designed for surface-mount applications within the HC-49S package. It operates at a nominal frequency of 28.8 MHz with a load capacitance of 20 pF and an equivalent series resistance (ESR) of 30 Ohms. The component provides a frequency tolerance and stability of ±50 ppm across a working temperature range of -20°C to +70°C. Physical dimensions include a length of 11.40 mm, width of 4.80 mm, and maximum height of 4.10 mm. It is RoHS compliant and classified under EAR99.

Crystals Feature Summary

• Fundamental resonance mode operation for stable timing signals
• Surface-mount construction in a compact HC-49S form factor
• Integrated glass-sealed design for environmental protection

Crystals Applications

• General-purpose digital circuit clock generation
• Microcontroller system timing references
• Communication interface synchronization modules

Crystals Procurement Notes

Verify current availability status as this part number may be discontinued or subject to limited stock. Confirm that the HC-49S package dimensions align with PCB layout constraints. Ensure the 20 pF load capacitance matches the oscillator circuit requirements. Check for updated compliance documentation regarding RoHS and REACH standards before finalizing procurement orders.

Crystals Selection Notes

Select this component when a standard 28.8 MHz frequency is required for basic timing applications. The HC-49S package offers robust mechanical stability compared to smaller SMD crystals. Consider the ±50 ppm stability sufficient for non-critical clock sources. Evaluate the -20°C to +70°C operating range against environmental conditions. Compare ESR values with driver circuit capabilities to ensure reliable oscillation startup.

Crystals Part Context

This crystal belongs to the 9C series from TXC Corporation, which focuses on standard quartz resonators for commercial electronics. The series utilizes glass-sealing technology to enhance durability. It serves as a foundational timing element for various consumer and industrial devices requiring precise frequency control without complex integration.

Crystals Replacement Considerations

The QT49S-24.000MBBK-T from QST is listed as a parameter-equivalent substitute, though it differs in frequency. No direct 28.8 MHz replacement is confirmed in the provided data. Verify electrical compatibility if substituting with other HC-49S crystals.