QT252S-27.000MAKV-T

Overview

The QT252S-27.000MAKV-T is a quartz crystal resonator manufactured by QST, designed for precision timing applications. It operates at a nominal frequency of 27 MHz in fundamental mode. The component features a frequency tolerance of ±30 ppm and stability of ±60 ppm across the operating temperature range. It has a load capacitance of 8 pF and an equivalent series resistance (ESR) of 100 Ohms. The device is housed in a compact 4-SMD, No Lead package with dimensions of 2.5 x 2 x 0.55 mm.

Feature Summary

• Fundamental mode operation for stable frequency generation
• Compact surface-mount design suitable for space-constrained PCB layouts
• High frequency stability within specified temperature ranges

Applications

• Precision timing circuits requiring 27 MHz reference
• Communication systems utilizing fundamental crystal oscillators
• Embedded electronics needing low-profile SMD resonators

Procurement Notes

Verify the specific ordering suffix to ensure the correct tolerance and packaging configuration matches the design requirements. Confirm that the 8 pF load capacitance aligns with the oscillator circuit design. Check for RoHS compliance status if required by project specifications. Ensure the 4-SMD no-lead package footprint matches the board layout guidelines.

Selection Notes

Select this component when a 27 MHz fundamental mode crystal is required with ±30 ppm tolerance. Consider the 8 pF load capacitance requirement for circuit compatibility. Evaluate the 100 Ohm ESR against the oscillator driver strength. The small 2.5x2 mm package is ideal for high-density surface-mount assemblies.

Part Context

This part belongs to QST's line of quartz crystal resonators, specifically the QT252S series. These components are engineered for reliability in various electronic applications. The series offers fundamental mode operation with standardized electrical parameters. The QT252S form factor provides a balance between performance and physical size for modern electronics.

Replacement Considerations

Cross-reference with other 27 MHz crystals having identical 8 pF load capacitance and 100 Ohm ESR. Verify mechanical footprint compatibility for 2.5x2x0.55 mm packages. Ensure frequency tolerance and stability specifications meet or exceed original requirements.