QT252S-27.120MAHQ-T

Overview

The QST QT252S-27.120MAHQ-T is a surface-mount quartz crystal resonator designed for precision timing applications. It operates at a fundamental frequency of 27.12 MHz with a frequency stability of ±30 ppm. The component features a load capacitance of 10 pF and an equivalent series resistance (ESR) of 100 Ohms. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.5 x 2.0 x 0.55 mm, suitable for automated assembly processes.

Feature Summary

• Fundamental mode operation for stable frequency generation
• Compact surface-mount footprint for space-constrained designs
• High frequency stability suitable for precision timing circuits

Applications

• Precision timing circuits requiring stable clock signals
• Embedded systems utilizing microcontrollers or FPGAs
• Communication modules needing accurate frequency references

Procurement Notes

Verify the exact part number QT252S-27.120MAHQ-T against manufacturer documentation to ensure correct specifications. Confirm that the load capacitance is 10 pF and the stability is ±30 ppm. Check for the specific 4-SMD package type and dimensions. Ensure the source provides genuine components with appropriate date codes and sealing.

Selection Notes

Select this component when a 27.12 MHz fundamental frequency is required with ±30 ppm stability. The 10 pF load capacitance must match the oscillator circuit design. The low ESR of 100 Ohms supports efficient driving levels. The small SMD package is ideal for high-density PCB layouts where space is limited.

Part Context

This part belongs to the QT252S series of surface-mount quartz crystals from QST. These components are engineered for reliability in consumer and industrial electronics. The series offers various frequencies and packages to meet diverse timing requirements while maintaining consistent performance standards across the product line.

Replacement Considerations

Compatible substitutes include other 27.12 MHz SMD crystals with matching 10 pF load capacitance and ±30 ppm stability. Verify package dimensions and pin configuration compatibility before substitution. Ensure the replacement maintains the same fundamental mode operation and ESR characteristics.