QT49S-24.000MAAJ-T

Overview

The QT49S-24.000MAAJ-T is a surface-mount MHz crystal manufactured by QST Products LLC, operating at a fundamental frequency of 24 MHz. It features a frequency stability of ±30ppm and an equivalent series resistance (ESR) of 30 Ohms. The component utilizes an HC-49/US package with dimensions of 11.4x4.35x3.8mm and supports a load capacitance of 18pF. Designed for surface mount technology, it operates within a temperature range of -20°C to +70°C. This active product is suitable for applications requiring stable clock signals in consumer electronics.

Feature Summary

• Surface-mount design compatible with standard SMD assembly processes
• Fundamental operating mode providing stable oscillation at 24 MHz
• HC-49/US package format ensuring mechanical robustness

Applications

• Consumer electronics clock sources
• Digital signal processing circuits
• Microcontroller system clocks

Procurement Notes

Verify the specific suffix 'AAJ' against official QST documentation to confirm the exact load capacitance and tolerance specifications. Ensure that the HC-49/US footprint matches the target PCB layout. Confirm the operating temperature range meets the environmental requirements of the final application before procurement.

Selection Notes

Select this component when a 24 MHz fundamental frequency with ±30ppm stability is required for surface-mount designs. Consider the 30 Ohm ESR for oscillator circuit compatibility. Evaluate the -20°C to +70°C temperature range against operational conditions. Compare against alternative packages if space constraints differ from the HC-49/US dimensions.

Part Context

The QT49S series represents QST's line of surface-mount quartz crystals. These components are designed for general-purpose timing applications. The model number indicates specific electrical parameters including frequency, stability, and package type. This series offers alternatives to through-hole crystals while maintaining similar performance characteristics for modern electronic assemblies.

Replacement Considerations

Compatible substitutes include other 24 MHz surface-mount crystals with matching HC-49/US footprints and 18pF load capacitance. Verify equivalent ESR values and frequency stability ratings. Cross-reference pin configurations and thermal characteristics to ensure functional interchangeability without redesigning the host circuit.