QT532G-28.63636MAAJ-T

Overview

The QT532G-28.63636MAAJ-T is a surface-mount crystal resonator manufactured by QST, operating at a nominal frequency of 28.63636 MHz. It features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ω. The component exhibits a frequency stability of ±30 ppm within the operating temperature range of -20°C to +70°C. Housed in a compact 5.0 mm x 3.2 mm SMD package, this device provides precise timing signals for electronic circuits requiring stable clock references.

Feature Summary

• Provides stable oscillation at 28.63636 MHz with ±30 ppm frequency stability across the specified industrial temperature range.
• Designed for surface-mount technology with a standard 18 pF load capacitance requirement.
• Utilizes a compact 5.0x3.2 mm footprint suitable for space-constrained printed circuit board layouts.

Applications

• Clock signal generation for microcontrollers and digital logic circuits
• Timing reference for communication interfaces such as UART or SPI
• Frequency source for IoT modules and embedded sensor systems

Procurement Notes

Verify the exact part number suffix against official QST documentation to confirm specific tolerance grades and packaging options. Ensure that the load capacitance requirements of the target circuit match the 18 pF specification to maintain accurate frequency performance. Cross-reference the operating temperature range with application environmental conditions to guarantee reliability under thermal stress.

Selection Notes

Select this component when a precise 28.63636 MHz clock source is required for surface-mount designs. Consider the ±30 ppm stability and 50 Ω ESR characteristics relative to the oscillator circuit's drive level and loading conditions. Evaluate the 5.0x3.2 mm package dimensions against available PCB real estate and ensure compatibility with automated assembly processes.

Part Context

This crystal resonator belongs to the QT532G series from QST, which offers various frequencies and package sizes for general-purpose timing applications. The MAAJ suffix typically denotes specific electrical parameters and packaging configurations within the product line. This series supports diverse electronics manufacturing needs by providing reliable frequency control solutions in standardized surface-mount formats.

Replacement Considerations

Consult official QST substitution guides for direct equivalents. Verify that any alternative component matches the 28.63636 MHz frequency, 18 pF load capacitance, and 5.0x3.2 mm package dimensions to ensure mechanical and electrical compatibility without redesigning the host circuit.