QT325S-24.576MDDJ-T

Overview

The QST QT325S-24.576MDDJ-T is a surface-mount quartz crystal resonator designed for precision timing applications. It operates at a fundamental frequency of 24.576 MHz with a frequency tolerance of ±20 ppm over the commercial temperature range of -20°C to +70°C. The component features an 18 pF load capacitance and a maximum series resistance of 50 Ohms. It is housed in a compact 4-SMD, No Lead package with dimensions of 3.2 mm x 2.5 mm x 0.7 mm, suitable for automated assembly processes.

Feature Summary

• Provides stable clock signals with ±20 ppm frequency tolerance
• Utilizes a low-profile 4-SMD no-lead package design
• Engineered for high reliability in consumer electronics

Applications

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

Procurement Notes

Verify the specific suffix 'MDDJ' against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure that the required load capacitance matches the target circuit design parameters before finalizing procurement orders.

Selection Notes

Select this component when a 24.576 MHz reference with ±20 ppm stability is required within the -20°C to +70°C operating window. Consider the 18 pF load capacitance requirement and the physical footprint constraints of the 3.2x2.5 mm SMD package during PCB layout planning.

Part Context

This part belongs to the QT325S series of thin-film or bulk acoustic wave quartz crystals manufactured by QST. The series offers various frequency options and tolerance grades, utilizing standard SMD packaging to support high-volume manufacturing in portable and stationary electronic devices.

Replacement Considerations

Compatible substitutes include the QT325S-24.576MAHJ-T from QST, which shares the same package but differs in tolerance specification. Cross-reference TXC AA-24.576MDHV-T for automotive-grade alternatives if AEC-Q200 certification is required.