QT532S-14.7456MAHJ-T

Overview

The QT532S-14.7456MAHJ-T is a surface-mount crystal oscillator manufactured by QST, designed for precise frequency generation in electronic circuits. It operates at a nominal frequency of 14.7456 MHz with a frequency stability tolerance of ±30 ppm within the commercial temperature range of -20°C to +70°C. The component features an 18 pF load capacitance and a maximum equivalent series resistance (ESR) of 40 Ohms. It is housed in a compact 4-SMD, No Lead package with dimensions of 5.0 mm x 3.2 mm x 0.9 mm, suitable for automated assembly processes.

Feature Summary

• Provides stable clock signals for digital systems requiring precise timing references
• Compact surface-mount design facilitates high-density PCB layout
• Optimized for low power consumption applications

Applications

• Microcontroller clock sources
• Communication interface timing
• Digital signal processing circuits

Procurement Notes

Verify the specific suffix 'MAHJ-T' against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure that the ordering information matches the required load capacitance and ESR values for the target circuit design. Cross-reference the package dimensions with the mechanical drawing to confirm compatibility with the footprint.

Selection Notes

Select this component when a 14.7456 MHz reference is required with ±30 ppm stability over the -20°C to +70°C range. Consider the 18 pF load capacitance requirement for proper oscillation. Evaluate the 40 Ohm ESR limit against the oscillator circuit's drive level constraints. Compare physical size requirements against alternative packages if space is limited.

Part Context

This part belongs to the QT532S series of surface-mount crystals from QST. The series offers various frequency options and stability grades, identified by suffix codes such as 'A' for ±30 ppm or 'D' for ±20 ppm. The QT532S form factor is standardized for general-purpose timing applications across consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 14.7456 MHz frequency, 18 pF load capacitance, and 4-SMD 5x3.2mm package. Verify equivalent ESR and stability ratings from other manufacturers like TXC or ECS before substitution.