QT252S-16.000MAHJ-T

Overview

The QST QT252S-16.000MAHJ-T is a passive quartz crystal resonator housed in a compact 4-SMD, No Lead package with dimensions of 2.5mm x 2.0mm x 0.55mm. It operates at a fundamental frequency of 16 MHz and utilizes a ceramic construction with seam sealing for enhanced moisture resistance. The component exhibits a frequency tolerance of ±30 ppm at 25°C and maintains stability within ±30 ppm across an operating temperature range of -40°C to +85°C. It features a load capacitance of 10 pF and is compliant with RoHS standards.

Feature Summary

• Compact 2.5mm x 2.0mm surface-mount footprint designed for space-constrained circuit boards
• Ceramic body with seam-sealed construction providing superior moisture protection compared to standard plastic packages
• RoHS compliant manufacturing process ensuring environmental safety

Applications

• Bluetooth wireless communication modules requiring stable clock sources
• Industrial control systems operating in moderate temperature environments
• Portable consumer electronics with strict size limitations

Procurement Notes

Verify the specific suffix MAHJ against the manufacturer's official datasheet to confirm the exact electrical parameters, particularly the load capacitance and temperature stability ratings. Ensure the ordering part number matches the required frequency tolerance and operating temperature range for your specific application environment before finalizing procurement.

Selection Notes

Select this component when a small form factor is critical alongside reliable performance in industrial temperature ranges. The 10 pF load capacitance must align with the host oscillator circuit design. Consider the ±30 ppm stability sufficient for general timing applications but verify if tighter tolerances are needed for high-speed data synchronization.

Part Context

This model belongs to the QT252S series of thin-type ceramic crystals from QST. The series is engineered for high-volume consumer and industrial applications where board real estate is limited. The 2520 package offers a balance between mechanical robustness and miniaturization, serving as a standard clock source for microcontrollers and communication interfaces.

Replacement Considerations

Direct replacements must match the 2.5x2.0mm package, 16 MHz frequency, 10 pF load capacitance, and ±30 ppm stability. Verify that substitute components support the same -40°C to +85°C operating range and seam-sealed construction to maintain equivalent reliability.