QT325S-25.000MADJ-T

Overview

The QT325S-25.000MADJ-T is a surface-mount crystal oscillator manufactured by QST, operating at a nominal frequency of 25 MHz. It features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. The component exhibits a frequency stability tolerance of ±30 ppm within the specified temperature range. Designed for compact electronic applications, it utilizes a 4-SMD, no-lead package configuration to facilitate automated assembly processes.

Feature Summary

• Provides stable 25 MHz timing signals with high frequency accuracy
• Utilizes a compact surface-mount package for space-constrained designs
• Engineered for reliable operation in consumer and industrial electronics

Applications

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

Procurement Notes

Verify the exact suffix designation against official QST documentation to confirm performance specifications. Ensure compatibility with existing circuit load capacitance requirements. Confirm availability status through authorized distributors as supply levels may fluctuate. Validate that the selected variant meets the specific thermal and electrical constraints of the target application environment.

Selection Notes

Select this component when a precise 25 MHz reference is required for SMD-based designs. Consider the 18 pF load capacitance requirement for proper oscillator tuning. Evaluate the ±30 ppm stability against system timing budgets. Compare physical dimensions against board space limitations to ensure mechanical fit during layout phase.

Part Context

This part belongs to the QT325S series of surface-mount crystals from QST. The series offers various frequency options and stability grades tailored for modern electronics. Components in this family share common footprint standards while differing in electrical parameters. This specific model targets applications demanding moderate stability in a small form factor.

Replacement Considerations

Cross-reference tools indicate parametrically similar parts are available. Verify substitute components match the 25 MHz frequency, 18 pF load capacitance, and 50 Ohm ESR specifications. Ensure the replacement maintains identical package dimensions and pinout configuration for direct board integration.