QT49S-24.576MAAE-T

Overview

The QT49S-24.576MAAE-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precision timing applications. It operates at a nominal frequency of 24.576 MHz with a frequency tolerance and stability of ±30 ppm at 25°C. The component utilizes an HC-49/US package form factor and features a load capacitance of 12 pF and an equivalent series resistance of 30 Ohms. It supports an operating temperature range from -20°C to +70°C, ensuring reliable performance in standard commercial environments.

Feature Summary

• Surface mount construction utilizing the HC-49/US package format for compact integration
• Precision frequency generation at 24.576 MHz with stable ±30 ppm tolerance
• Operational reliability within a defined commercial temperature range

Applications

• Digital signal processing controller clock sources
• Motor control system timing references
• Real-time task synchronization circuits

Procurement Notes

Verify that the specific part number matches the required frequency and package type before procurement. Confirm that the supplier provides documentation confirming the HC-49/US surface mount variant. Ensure the load capacitance specification aligns with the circuit design requirements. Check that the operating temperature range meets the environmental conditions of the intended application. Validate the manufacturer source to ensure component authenticity.

Selection Notes

Select this component when a surface-mount solution is required for 24.576 MHz timing. The HC-49/US SMD form factor offers a balance between traditional crystal stability and modern PCB space constraints. Consider the ±30 ppm tolerance sufficient for general digital logic and communication interfaces. Evaluate the 12 pF load capacitance compatibility with the oscillator circuit's input capacitance. Assess the -20°C to +70°C range against the operational environment.

Part Context

This component belongs to the QT49S series of quartz crystals produced by QST. The series includes various frequencies and package options, including through-hole and surface-mount variants. The QT49S designation indicates a specific product line focused on cost-effective yet reliable timing solutions for consumer and industrial electronics. The suffix details define the specific electrical parameters and packaging configuration.

Replacement Considerations

Direct substitutes must match the 24.576 MHz frequency, HC-49/US SMD package, 12 pF load capacitance, and ±30 ppm tolerance. Verify that alternative manufacturers offer identical physical dimensions for board compatibility. Ensure the replacement part maintains the same operating temperature range and electrical characteristics.