QT252S-27.120MAAV-T

Overview

The QT252S-27.120MAAV-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 27.12 MHz with a frequency tolerance of ±30 ppm at 25°C and ±30 ppm over the temperature range of -20°C to +70°C. The component features an 8 pF load capacitance and a maximum series resistance of 100 Ohms. It utilizes a 4-SMD, no-lead package with body dimensions of 2.5 x 2.0 x 0.55 mm, ensuring compact integration into electronic circuits.

Feature Summary

• Surface-mount design with no-lead 4-SMD configuration
• High stability within specified temperature ranges
• Compact physical footprint for space-constrained layouts

Applications

• Clock signal generation in microcontroller systems
• Frequency reference for wireless communication modules
• Timing sources in consumer electronics devices

Procurement Notes

Verify the specific suffix 'AAV' against the manufacturer's current datasheet to confirm exact tolerance and temperature specifications. Ensure the ordering part number matches the required load capacitance and frequency stability for the target application. Cross-reference with official QST documentation to validate package dimensions and soldering recommendations before procurement.

Selection Notes

Select this component when a 27.12 MHz reference with ±30 ppm stability is required in a minimal SMD footprint. Consider the 8 pF load capacitance compatibility with the oscillator circuit. Evaluate the 100 Ohm series resistance against drive level requirements. Confirm that the operating temperature range of -20°C to +70°C meets the environmental constraints of the final assembly.

Part Context

This part belongs to the QT252S series of quartz crystals from QST, characterized by small form factors suitable for modern PCB designs. The series offers various frequencies and tolerances, with the 27.12 MHz variant serving as a common clock source. The 'AAV' suffix typically denotes specific packaging and tolerance grades within the product line.

Replacement Considerations

Direct substitutes include other 27.12 MHz crystals with identical 8 pF load capacitance and comparable ±30 ppm stability in a 2.5x2.0mm SMD package. Verify equivalent series resistance and temperature coefficients when cross-referencing with alternative manufacturers.