QT532S-27.000MAHJ-T

Overview

The QST QT532S-27.000MAHJ-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 27 MHz. It features a frequency stability and tolerance of ±30 ppm at 25°C, with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 40 Ohms. The component utilizes a seam-sealed package with dimensions of 5.0 mm x 3.2 mm x 0.9 mm in a 4-SMD, no-lead configuration. It supports base harmonic operation within a temperature range of -40°C to +85°C and complies with RoHS3 standards.

Feature Summary

• Seam-sealed construction for enhanced environmental protection
• Surface-mount design optimized for automated assembly processes
• Fundamental mode operation ensuring stable resonance characteristics

Applications

• Clock signal generation in microcontroller circuits
• Frequency reference sources for communication modules
• Timing components in consumer electronic devices

Procurement Notes

Verify the specific package variant against the datasheet to ensure compatibility with PCB footprint requirements. Confirm that the seam-sealed construction meets the environmental durability needs of the target application. Check for any specific handling instructions related to the surface-mount technology during assembly to prevent mechanical stress on the crystal element.

Selection Notes

Select this component when a 27 MHz fundamental frequency with ±30 ppm stability is required in a compact 5.0x3.2mm form factor. Ensure the circuit design accommodates the 18pF load capacitance and 40 Ohm ESR specifications. Consider the -40°C to +85°C operating range to verify suitability for the intended thermal environment compared to wider industrial or automotive grade alternatives.

Part Context

This part belongs to the QST QT532S series of surface-mount quartz crystals. The series offers various frequencies within the same 5.0x3.2mm seam-sealed package, allowing for consistent board layout across different designs. The QT532S designation indicates a specific seal type and footprint distinct from other QST crystal families.

Replacement Considerations

Direct substitutes include parts from the same family such as QT532S-25.000MAHJ-T or QT532S-8.000MAHJ-T if frequency differences are acceptable. Cross-manufacturer replacements must match the 27 MHz frequency, 18pF load capacitance, 40 Ohm ESR, and 5.0x3.2x0.9mm package dimensions.