QT49S-14.31818MAGE-T

Overview

The QST QT49S-14.31818MAGE-T is a quartz crystal resonator operating at a fundamental frequency of 14.31818 MHz. It utilizes an AT-cut design housed in a surface-mount package with dimensions of 2.5 mm by 2.0 mm and a height of 0.6 mm. The component features four solderable terminals for board attachment. Key electrical specifications include a load capacitance of 18 pF, a maximum equivalent series resistance (ESR) of 60 ohms, and a frequency tolerance of ±10 ppm at 25°C. The unit operates within a temperature range of -40°C to +85°C.

Feature Summary

• AT-cut quartz resonator technology ensures high stability and low aging rates
• Surface-mount construction facilitates automated assembly processes
• Four-terminal configuration provides robust mechanical anchoring
• Designed for applications requiring precise timing signals

Applications

• Microcontroller clock sources
• Digital signal processing circuits
• Communication interface modules
• Consumer electronic devices

Procurement Notes

Verify the specific suffix codes against the manufacturer's current datasheet to confirm exact load capacitance and tolerance grades. Ensure the requested package dimensions match the footprint requirements of the target PCB layout. Confirm that the operating temperature range aligns with the environmental conditions of the final application to prevent frequency drift issues during operation.

Selection Notes

Select this component when a compact surface-mount solution is required for 14.31818 MHz timing. Consider the 18 pF load capacitance requirement for circuit compatibility. Evaluate the ESR limits against the oscillator circuit's drive level constraints. Compare alternative packages if space restrictions differ from the 2.5x2.0 mm form factor.

Part Context

This part belongs to QST's line of general-purpose quartz crystal resonators. These components are widely used in digital electronics where stable clock references are essential. The product family typically includes various frequencies and package sizes to support diverse embedded system designs. Standard variants often share similar mounting and electrical characteristics.

Replacement Considerations

Direct substitutes must match the 14.31818 MHz frequency, 18 pF load capacitance, and 2.5x2.0 mm package dimensions. Verify that alternative manufacturers offer comparable ESR values and temperature stability. Check for pin-compatible footprints to ensure seamless integration without PCB redesign.