QT325S-25.000MEDQ-T

Overview

The QST QT325S-25.000MEDQ-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 25.000 MHz. It utilizes the QT325S package with dimensions of 3.2mm x 2.5mm x 0.7mm. The component features a load capacitance of 10pF and offers a frequency stability of ±20 ppm within the temperature range of -20°C to +70°C, as indicated by the 'D' suffix in the part number.

Feature Summary

• Fundamental mode operation for precise timing applications
• Compact surface-mount design suitable for automated assembly
• Defined load capacitance for stable oscillator circuit integration

Applications

• Microcontroller clock sources
• Communication module timing references
• Embedded system oscillators

Procurement Notes

Verify the specific suffix 'MEDQ' against official QST documentation to confirm the exact temperature stability class (-20°C to +70°C) and load capacitance. Ensure the ordering information matches the required frequency tolerance and package type for your design. Cross-reference with authorized distributors for availability status.

Selection Notes

Select this component when a 25 MHz fundamental frequency is required with ±20 ppm stability over a commercial temperature range. The 10pF load capacitance must match the oscillator circuit requirements. Consider the 3.2x2.5mm footprint for space-constrained PCB layouts.

Part Context

This part belongs to the QST QT325S series of thin film bulk acoustic resonator (FBAR) or quartz crystals, designed for high-frequency timing applications. The series offers various stability grades and temperature ranges, distinguished by alphanumeric suffixes following the base model number.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify parametric equivalence with other 25MHz SMD crystals from QST or competitors if direct substitution is needed.