QT532S-27.000MAAE-T

Overview

The QT532S-27.000MAAE-T is a surface-mount crystal oscillator manufactured by QST, operating at a fundamental frequency of 27 MHz. It features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 40 Ohms. The component exhibits a frequency stability of ±30 ppm and is housed in a compact 4-SMD, No Lead package with dimensions of 5.0 mm x 3.2 mm x 0.9 mm. This device is designed for precise timing applications requiring stable oscillation within standard commercial temperature ranges.

Feature Summary

• Compact surface-mount design suitable for space-constrained PCB layouts
• Stable oscillation performance with low equivalent series resistance
• Lead-free construction compliant with environmental standards

Applications

• Clock signal generation for microprocessors and microcontrollers
• Timing references for communication interfaces such as UART and SPI
• Frequency control in consumer electronic devices

Procurement Notes

Verify the manufacturer designation on official documentation, as this part number is associated with QST specifications but may appear under TXC branding in certain distributor catalogs. Confirm the specific package dimensions and pin configuration against the latest datasheet to ensure compatibility with your PCB footprint. Ensure that the required load capacitance matches your circuit design parameters before finalizing procurement.

Selection Notes

Select this component when a 27 MHz reference is required for SMD assembly processes. The 12 pF load capacitance must align with the oscillator circuit's external capacitor values to achieve the specified ±30 ppm stability. Consider the 40 Ohm ESR limit to ensure reliable startup conditions within your specific application environment.

Part Context

This crystal belongs to the QT532S series, which represents a line of surface-mount resonators designed for high-frequency stability. The series is characterized by its small form factor and robust performance in digital timing circuits. The specific model denotes the 27 MHz variant within this family, offering a standardized solution for common clocking requirements in modern electronics.

Replacement Considerations

Direct substitutes include other 27 MHz crystals with identical 4-SMD, No Lead packaging and matching electrical parameters. Verify that alternative parts maintain the same 12 pF load capacitance and 40 Ohm ESR to ensure circuit compatibility without redesign.