QT325S-24.000MAHJ-T

Overview

The QT325S-24.000MAHJ-T is a surface-mount quartz crystal resonator manufactured by QST. It operates at a fundamental frequency of 24 MHz with a load capacitance of 18 pF and an equivalent series resistance of 50 Ohms. The component features a 4-SMD, no-lead package with dimensions of 3.2 x 2.5 x 0.7 mm. Frequency stability and tolerance are specified at ±30 ppm for both 25°C and the -40 to 85°C operating range.

Feature Summary

• Seam seal construction for environmental protection
• Surface mount design compatible with automated assembly
• Wide operating temperature range support

Applications

• Microcontroller clock sources
• Communication module timing references
• Consumer electronics oscillators

Procurement Notes

Verify the manufacturer designation on the physical component or accompanying documentation, as the model prefix may appear under different brand identifiers in distributor catalogs. Confirm that the specific suffix matches the required electrical parameters, particularly the 18 pF load capacitance and 50 Ohm ESR, before finalizing procurement orders.

Selection Notes

Select this component when a 24 MHz reference is required in a compact 3.2x2.5 mm footprint. Ensure the application circuit provides the specified 18 pF load capacitance to maintain the stated ±30 ppm accuracy. Verify that the operating environment remains within the -40 to 85°C range to guarantee long-term frequency stability.

Part Context

This part belongs to the QT325S family of seam-seal quartz crystals. These components are designed for high-volume surface mount applications where space constraints limit the use of larger through-hole packages. The family offers various frequencies while maintaining consistent mechanical dimensions and mounting characteristics.

Replacement Considerations

Direct substitutes must match the 24 MHz frequency, 18 pF load capacitance, 50 Ohm ESR, and 3.2x2.5x0.7 mm package dimensions. Verify that alternative parts offer comparable ±30 ppm stability across the -40 to 85°C temperature range to ensure system timing integrity.