QT252S-25.000MAHV-T

Overview

The QT252S-25.000MAHV-T is a quartz crystal oscillator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 25 MHz with a load capacitance of 8 pF and an equivalent series resistance of 100 Ohms. The component utilizes a 2.5x2.0 mm seam seal package configuration. Frequency stability is specified at ±30 ppm at 25°C and ±30 ppm across the -40 to 85°C temperature range.

Feature Summary

• Utilizes a compact 2.5x2.0 mm seam seal package for space-constrained designs
• Provides stable oscillation at 25 MHz with low equivalent series resistance
• Maintains consistent frequency tolerance across extended industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication module timing circuits
• Digital signal processing systems

Procurement Notes

Verify the specific suffix MAHV against official QST documentation to confirm exact electrical tolerances and temperature coefficients. Ensure compatibility with reflow soldering profiles defined in the manufacturer datasheet. Cross-reference pinout configurations with target PCB layout requirements to prevent assembly errors during production integration.

Selection Notes

Select this component when a 25 MHz reference is required with moderate stability needs. The 8 pF load capacitance must match the oscillator circuit design parameters. Consider the ±30 ppm tolerance relative to system timing accuracy requirements compared to higher precision alternatives in the QT252S family.

Part Context

This part belongs to the QT252S series of surface-mount quartz crystals from QST. The series offers various frequency options within the 2.5x2.0 mm form factor. Different suffixes indicate variations in stability, temperature range, and packaging specifications while maintaining the same physical footprint and basic operational principles.

Replacement Considerations

Direct substitutes include other QT252S-25.000 variants with matching load capacitance and package dimensions. Verify that alternative manufacturers offer identical seam seal construction and electrical characteristics to ensure functional equivalence without redesign.