QT325G-16.384MAHE-T

Overview

The QST QT325G-16.384MAHE-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 16.384 MHz. It features a compact 4-SMD, no-lead package with dimensions of 3.2 x 2.5 x 0.8 mm. The component exhibits a frequency tolerance and stability of ±30 ppm at 25°C and across the temperature range of -40°C to +85°C. It utilizes a load capacitance of 12 pF and has an equivalent series resistance (ESR) of 60 Ω.

Feature Summary

• Compact 3.2x2.5mm surface-mount footprint for space-constrained designs
• Glass-sealed construction ensuring long-term frequency stability
• Fundamental mode operation for precise timing applications

Applications

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

Procurement Notes

Verify the specific suffix 'MAHE' against the manufacturer's current datasheet to confirm pin configuration and soldering profile requirements. Ensure the load capacitance matches the target circuit design before procurement. Check for RoHS compliance documentation if required by local regulations.

Selection Notes

Select this component when a 16.384 MHz reference is required in a small SMD form factor. The ±30 ppm tolerance suits general-purpose digital systems rather than high-precision RF applications. Consider the 12pF load capacitance requirement for oscillator circuit compatibility.

Part Context

This part belongs to the QT325G series of glass-sealed quartz crystals manufactured by QST. The series offers various frequencies within the same 3.2x2.5mm package, allowing for standardized board layouts across different product variants while maintaining consistent mechanical and thermal characteristics.

Replacement Considerations

Direct substitutes include other manufacturers' 3.2x2.5mm crystals with identical 16.384MHz frequency, 12pF load capacitance, and ±30ppm tolerance. Verify ESR values and mounting pad layouts to ensure electrical and mechanical compatibility without redesign.