QT49S-22.1184MAAE-T

Overview

The QT49S-22.1184MAAE-T is a quartz crystal resonator manufactured by QST, designed for precision frequency control in electronic circuits. It operates at a nominal frequency of 22.1184 MHz with a frequency tolerance of ±30 ppm. The component features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 30 Ohms. It utilizes the HC-49/US package style, providing a robust mechanical structure suitable for through-hole mounting on printed circuit boards.

Feature Summary

• Provides stable oscillation at 22.1184 MHz with ±30 ppm tolerance
• Utilizes HC-49/US package for reliable mechanical support
• Designed for standard load capacitance of 12 pF

Applications

• Microcontroller clock sources
• Communication module timing
• Digital signal processing circuits

Procurement Notes

Verify the specific manufacturer designation, as some listings associate this part number with TXC Corporation while others cite QST. Confirm the package type matches HC-49/US requirements. Ensure the frequency tolerance of ±30 ppm meets system stability needs. Check datasheet specifications for operating temperature range before integration.

Selection Notes

Select this component when a precise 22.1184 MHz reference is required with moderate stability. The 12 pF load capacitance must match the oscillator circuit design. Consider the 30 Ohm ESR for drive level limitations. The HC-49/US form factor dictates board layout constraints for through-hole assembly.

Part Context

This crystal belongs to the QT49S series, which includes various frequencies such as 16.000 MHz and 13.560 MHz. These components share similar electrical characteristics like ±30 ppm tolerance but differ in frequency and sometimes ESR values. The series is commonly used in general-purpose timing applications requiring standard quartz resonators.

Replacement Considerations

Direct substitutes include other HC-49/US crystals with identical 22.1184 MHz frequency, 12 pF load capacitance, and ±30 ppm tolerance. Verify ESR compatibility, as variations may affect start-up time. Cross-reference with manufacturers offering equivalent performance metrics.