QT532G-14.31818MAHJ-T

Overview

The QT532G-14.31818MAHJ-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 14.31818 MHz with a stability tolerance of ±30 ppm across the industrial temperature range of -40°C to +85°C. The component features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. It utilizes a glass-sealed package construction in a 5.0x3.2 mm footprint, providing two solder pads for reliable mounting on printed circuit boards.

Feature Summary

• Glass-sealed package construction for enhanced environmental stability
• Surface-mount design compatible with automated assembly processes
• Industrial temperature range operation ensuring consistent performance

Applications

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

Procurement Notes

Verify the specific suffix 'MAHJ' against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure the ordering part number matches the required 14.31818 MHz frequency and 18 pF load capacitance. Cross-reference the package dimensions and pin configuration with the manufacturer's mechanical drawing to guarantee compatibility with the target PCB layout and assembly equipment.

Selection Notes

Select this component when a precise 14.31818 MHz reference is required for digital systems. The ±30 ppm stability suits general-purpose timing applications rather than high-precision oscillators. Consider the 50 Ohm ESR for driver circuit compatibility. The glass-seal variant offers better long-term stability compared to standard epoxy-sealed crystals in harsh environments.

Part Context

The QT532G series represents QST's line of miniature surface-mount quartz crystals. This model belongs to the 5.0x3.2 mm form factor family, balancing size constraints with electrical performance. The 'G' suffix typically denotes the ±50 ppm or ±30 ppm stability options depending on the full part code structure defined by the manufacturer.

Replacement Considerations

Direct substitutes include other manufacturers offering 14.31818 MHz crystals in 5.0x3.2 mm packages with 18 pF load capacitance and similar ESR values. Verify that alternative parts meet the same ±30 ppm stability requirement over the -40°C to +85°C range.