QT49S-11.2896MEEJ-T

Overview

The QST QT49S-11.2896MEEJ-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 11.2896 MHz. It features a frequency stability and tolerance of ±10 ppm and an equivalent series resistance (ESR) of 40 Ohms. Designed for HC-49/US package dimensions, the component supports a load capacitance of 18 pF. The unit operates within a temperature range of -20°C to +70°C and complies with RoHS3 standards.

Feature Summary

• Fundamental mode operation for precise timing applications
• Surface mount construction compatible with automated assembly processes
• Compliance with RoHS3 environmental regulations

Applications

• Microcontroller clock sources
• Communication interface circuits
• Digital signal processing systems

Procurement Notes

Verify that the replacement part matches the original electrical specifications, including frequency, load capacitance, and ESR. Confirm package compatibility and thermal rating alignment with the design requirements. Ensure the substitute component meets the same regulatory compliance standards as the intended application demands.

Selection Notes

Select this component when a stable 11.2896 MHz reference is required in a compact surface-mount form factor. Consider the ±10 ppm tolerance and 40 Ohm ESR limits during circuit design. Ensure the operating environment stays within the specified -20°C to +70°C range for optimal performance.

Part Context

This crystal belongs to the QT49S series from QST, designed for general-purpose timing applications. It serves as a parameter-equivalent alternative to discontinued parts like the TXC 9C-11.2896MEEJ-T, maintaining identical electrical characteristics while offering current availability for production needs.

Replacement Considerations

The QT49S-11.2896MEEJ-T is documented as a parameter-equivalent replacement for the TXC CORPORATION 9C-11.2896MEEJ-T. Both components share identical frequency, tolerance, load capacitance, and package type specifications.