QT325S-12.288MEIV-T

Overview

The QT325S-12.288MEIV-T is a surface-mount crystal oscillator manufactured by QST, operating at a fundamental frequency of 12.288 MHz. It features a compact 4-SMD, No Lead package with dimensions of 3.20mm x 2.50mm. The component exhibits a frequency tolerance of ±10 ppm and a stability of ±20 ppm over the specified temperature range. It utilizes an 8 pF load capacitance and has a maximum series resistance of 80 Ohms. This device is designed for precise timing applications requiring small form factors.

Feature Summary

• Compact 3.2x2.5mm surface mount footprint
• High frequency stability with ±10 ppm tolerance
• Low profile no-lead SMD packaging

Applications

• Portable electronic devices
• Communication modules
• Microcontroller clock sources

Procurement Notes

Verify the specific suffix 'IV' against official QST documentation to confirm the exact temperature range and stability specifications. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Cross-reference the load capacitance requirements with the target circuit design to maintain frequency accuracy.

Selection Notes

Select this component when space constraints require a 3.2x2.5mm crystal size. It is suitable for applications needing 12.288 MHz with tight frequency tolerance. Consider the operating temperature range defined by the suffix to ensure reliability in the intended environment.

Part Context

This part belongs to the QT325S series from QST, which offers various frequency options and stability grades within the same physical package. The series provides standardized surface-mount solutions for timing needs across consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 12.288 MHz crystals in 3225 packages with matching electrical parameters. Verify pinout compatibility and thermal characteristics before substitution.