QT252S-27.000METE-T

Overview

The QT252S-27.000METE-T is a surface-mount crystal oscillator manufactured by QST, designed for precise frequency generation in electronic circuits. It operates at a nominal frequency of 27 MHz with a frequency tolerance and stability of ±10 ppm at 25°C and across the -30°C to +85°C temperature range. The component features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 100 Ohms. It utilizes a 4-SMD, no lead package with dimensions of 2.5 x 2.0 mm, suitable for automated assembly processes.

Feature Summary

• Provides stable frequency output within specified temperature ranges
• Utilizes compact surface-mount packaging for space-constrained designs
• Engineered for low equivalent series resistance applications

Applications

• Clock signal generation for microcontrollers
• Frequency reference for communication modules
• Timing sources for consumer electronics

Procurement Notes

Verify the complete part number including suffixes such as METE-T against official QST documentation to ensure correct tolerance and packaging specifications. Confirm that the supplier provides original manufacturer data sheets. Check for compliance with RoHS and REACH regulations if required by your manufacturing standards. Ensure storage conditions align with moisture sensitivity level requirements prior to soldering.

Selection Notes

Select this component when a 27 MHz reference with ±10 ppm stability is required over a commercial temperature range. Consider the 12 pF load capacitance compatibility with the host oscillator circuit. Evaluate the 4-SMD footprint against available PCB real estate. Compare ESR values against circuit drive level limitations to prevent over-driving the crystal.

Part Context

This part belongs to the QT252S series of surface-mount crystals from QST. The series offers various frequencies and tolerances, with the 27 MHz variant serving common timing needs. The METE-T suffix indicates specific performance characteristics regarding tolerance and temperature stability defined by the manufacturer.

Replacement Considerations

Direct substitutes include other 27 MHz SMD crystals with identical 12 pF load capacitance and ±10 ppm stability. Verify mechanical footprint compatibility before substitution. Cross-reference with similar packages from other manufacturers ensuring electrical parameters match or exceed original specifications.