QT252S-38.400MAAV-T

Overview

The QT252S-38.400MAAV-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precise frequency generation in electronic circuits. It operates at a nominal frequency of 38.4 MHz with a frequency stability and tolerance of ±30 ppm at 25°C. The component features an equivalent series resistance (ESR) of 60 ohms and requires a load capacitance of 8 pF for optimal performance. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.5 x 2.0 mm. The device supports an operating temperature range from -20°C to +70°C, ensuring reliable operation in various environmental conditions.

Feature Summary

• Compact 4-SMD, No Lead package design suitable for automated surface-mount assembly processes
• High frequency stability of ±30 ppm ensures accurate timing signals for digital systems
• Low equivalent series resistance of 60 ohms facilitates efficient circuit integration
• Operates reliably within a standard industrial temperature range of -20°C to +70°C

Applications

• Clock signal generation for microcontrollers and digital logic circuits
• Timing references for communication interfaces such as UART and SPI
• Frequency standards for consumer electronics and embedded systems
• Oscillator circuits requiring stable 38.4 MHz reference frequencies

Procurement Notes

Verify the specific suffix MAAV-T against official QST documentation to confirm exact electrical parameters and packaging specifications. Ensure compatibility with existing PCB footprint and reflow soldering profiles. Cross-reference datasheet values for load capacitance and ESR to validate circuit design requirements before procurement.

Selection Notes

Select this component when a 38.4 MHz frequency is required with ±30 ppm stability. Consider the 8 pF load capacitance requirement for oscillator circuit design. Evaluate the 60 ohm ESR against driver strength capabilities. Confirm that the -20°C to +70°C temperature range meets application environmental needs.

Part Context

This part belongs to the QT252S series of surface-mount crystals from QST. The series offers various frequencies and stability options in a standardized 2.5x2.0 mm package. The MAAV-T suffix typically denotes specific tolerance and packaging characteristics within the product line.

Replacement Considerations

Direct substitutes must match the 38.4 MHz frequency, ±30 ppm stability, 8 pF load capacitance, and 4-SMD No Lead package. Verify pinout compatibility and thermal characteristics. Consult manufacturer cross-reference lists for approved alternatives.