QT325S-18.432MAAE-T

Overview

The QST QT325S-18.432MAAE-T is a surface-mount quartz crystal resonator designed for precise frequency generation in electronic circuits. It operates at a nominal frequency of 18.432 MHz with a load capacitance of 12 pF. The component exhibits a frequency stability of ±30 ppm within the operating temperature range of -20°C to +70°C. Its physical dimensions are 3.2 mm x 2.5 mm x 0.7 mm, facilitating compact board layouts. The unit is supplied in tape and reel packaging for automated assembly processes.

Feature Summary

• Surface-mount design with glass seal construction for environmental robustness
• High frequency stability of ±30 ppm across specified industrial temperature ranges
• Compact 3.2x2.5 mm footprint suitable for space-constrained applications

Applications

• Embedded communication systems requiring stable clock signals
• Microcontroller-based devices needing precise timing references
• Industrial control equipment operating in moderate temperature environments

Procurement Notes

Verify that the ordering suffix matches the required frequency tolerance and temperature range specifications. Confirm the package type aligns with automated pick-and-place requirements. Ensure the load capacitance specification matches the target oscillator circuit design parameters before finalizing procurement orders.

Selection Notes

Select this component when a 18.432 MHz reference is required with ±30 ppm stability. Consider the 3.2x2.5 mm size for limited PCB area. Evaluate thermal requirements against the -20°C to +70°C operational range. Compare load capacitance needs with existing oscillator designs to ensure proper frequency accuracy.

Part Context

This part belongs to the QT325S series of quartz crystals manufactured by QST. The series offers various frequency options and stability grades. The specific model provides a standard communication frequency point. It utilizes a glass-seal technology for enhanced reliability compared to standard epoxy-sealed alternatives.

Replacement Considerations

Compatible substitutes include the TXC QT325S-18.432MAAE-T. Verify dimensional compatibility and electrical parameters match exactly. Ensure the replacement maintains the same load capacitance and stability ratings.