QT325S-16.000MAAJ-T

Overview

The QT325S-16.000MAAJ-T is a quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 16 MHz. It utilizes a seam seal glass package with dimensions of 3.2 mm x 2.5 mm x 0.7 mm and features four surface-mount terminals. The component exhibits a load capacitance of 18 pF and an equivalent series resistance (ESR) of 60 Ohms. Frequency stability is rated at ±30 ppm over the operating temperature range of -40°C to +85°C.

Feature Summary

• Seam seal glass construction for environmental protection
• Compact 4-SMD no-lead surface mount footprint
• Stable oscillation characteristics for clock generation

Applications

• Microcontroller clock sources
• Embedded communication modules
• Digital signal processing circuits

Procurement Notes

Verify the specific suffix MAJ against official QST documentation to confirm exact tolerance and temperature range specifications. Ensure compatibility with standard reflow soldering profiles for glass-sealed components. Cross-reference the 18 pF load capacitance requirement with the target circuit design to maintain frequency accuracy within the specified ±30 ppm limits.

Selection Notes

Select this component when a compact 3.2x2.5 mm form factor is required for space-constrained designs. The 16 MHz frequency is suitable for standard system clocks. Consider the 60 Ohm ESR value for oscillator circuit matching. The glass seal offers robustness compared to ceramic alternatives in certain environments.

Part Context

This part belongs to the QT325S series of surface-mount crystals from QST. The series is characterized by small footprints and high reliability. The 16.000MAAJ-T designation specifically indicates the 16 MHz frequency variant with the MAJ suffix defining its electrical and mechanical tolerances within the product line.

Replacement Considerations

Direct substitutes include the TXC Corporation QT325S-16.000MEIJ-T and the QST QT325S-16.000MAHJ-T. Verify that alternative suffixes match the required 18 pF load capacitance and ±30 ppm stability specifications before implementation.