QT252S-37.400MAAV-T

Overview

The QT252S-37.400MAAV-T is a surface-mount quartz crystal resonator manufactured by QST. It operates at a fundamental frequency of 37.4 MHz with a tolerance of ±30 ppm at 25°C and across the -20°C to +70°C temperature range. The component features an 8 pF load capacitance and a maximum series resistance of 60 Ohms. It utilizes a 4-SMD, no-lead package with dimensions of 2.5 mm x 2.0 mm x 0.55 mm. This device provides stable frequency generation for electronic circuits requiring precise timing signals within specified thermal conditions.

Feature Summary

• Provides stable oscillation at 37.4 MHz with ±30 ppm frequency tolerance
• Designed for surface-mount assembly in compact 2.5x2.0 mm packages
• Operates reliably within industrial temperature ranges from -20°C to +70°C

Applications

• Microcontroller clock sources
• Communication module timing references
• Digital signal processing circuits

Procurement Notes

Verify the specific suffix 'AAV' against the manufacturer's official datasheet to confirm the exact temperature stability class and load capacitance specifications. Ensure the ordering part number matches the required frequency and package type. Request certified test reports or material compliance documentation to validate authenticity and performance consistency before integration into production designs.

Selection Notes

Select this component when a 37.4 MHz fundamental frequency is required with moderate stability needs. The ±30 ppm tolerance suits general-purpose digital applications rather than high-precision RF systems. Consider the 8 pF load capacitance compatibility with the host oscillator circuit. Evaluate the 60 Ohm ESR limits against the driving capability of the target microcontroller or logic gate interface.

Part Context

This part belongs to the QT252S family of SMD crystals from QST. Similar variants exist with different frequencies and tolerance codes, such as the QT252S-38.000MAAV-T. The model designation indicates the physical size, frequency, and specific stability grade defined by the manufacturer's coding system for surface-mount resonators.

Replacement Considerations

Direct substitutes include other 37.4 MHz SMD crystals with matching 8 pF load capacitance and ≤60 Ohm ESR. Verify pinout compatibility and ensure the replacement meets the same ±30 ppm temperature stability requirements. Cross-reference with QST's updated catalog for potential newer revisions of the QT252S series.