QT532G-20.000MAHJ-T

Overview

The QT532G-20.000MAHJ-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 20 MHz with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. The component exhibits a frequency tolerance and stability of ±30 ppm. It features a 2-SMD, no-lead package with body dimensions of 5.0 mm x 3.2 mm x 1.2 mm. The device supports base harmonic operation mode.

Feature Summary

• Surface-mount quartz crystal resonator with 2-SMD no-lead configuration
• Fundamental oscillation mode at 20 MHz with 18 pF load capacitance
• Compact 5.0 x 3.2 mm footprint suitable for space-constrained designs

Applications

• General-purpose clock generation in digital circuits
• Microcontroller and microprocessor system timing references
• Communication interface synchronization modules

Procurement Notes

Verify the manufacturer designation carefully, as some listings associate this part number with TXC Corporation despite the QST model prefix. Confirm the specific load capacitance of 18 pF and ±30 ppm stability against your circuit requirements. Ensure the 2-SMD no-lead package dimensions match your PCB footprint constraints before finalizing procurement.

Selection Notes

Select this component when a 20 MHz fundamental frequency with tight ±30 ppm stability is required. The 18 pF load capacitance must match the oscillator circuit design to ensure accurate frequency performance. Consider the 50 Ohm ESR value for driver strength compatibility. The compact 5x3.2mm SMD package is appropriate for high-density board layouts where standard through-hole crystals cannot fit.

Part Context

This part belongs to the QT532G series of surface-mount quartz crystals. It shares the same physical footprint and general electrical characteristics with other frequencies in the series, such as the 18.432 MHz variant. The 'G' suffix typically denotes specific packaging or material attributes within the QST product line, while 'J' indicates the tolerance grade.

Replacement Considerations

Direct substitutes include the QT532G-20.000MAHE-T from QST, which offers similar specifications. Cross-manufacturer replacements should maintain the 20 MHz frequency, 18 pF load capacitance, and 5x3.2mm SMD package. Verify that any alternative part meets the ±30 ppm stability requirement and compatible ESR values.