QT325S-27.120MAHV-T

Overview

The QT325S-27.120MAHV-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precise frequency generation in electronic circuits. It operates at a fundamental frequency of 27.12 MHz with a frequency stability of ±30ppm and a load capacitance of 8pF. The component features an equivalent series resistance (ESR) of 50 Ohms and supports base harmonic operation. It is housed in a compact 4-SMD, No Lead package with dimensions of 3.2mm x 2.5mm x 0.7mm. The device functions within a temperature range of -40°C to +85°C and complies with RoHS3 standards.

Feature Summary

• Compact 3.2x2.5mm SMD footprint for space-constrained designs
• Wide operating temperature range from -40°C to +85°C
• High stability ±30ppm frequency tolerance
• RoHS3 compliant lead-free construction

Applications

• Embedded communication systems requiring stable clock signals
• Microcontroller oscillator circuits
• Wireless module frequency references
• Consumer electronics timing applications

Procurement Notes

Verify the specific suffix HV-T against official QST documentation to confirm pin configuration and material specifications. Ensure compatibility with PCB soldering profiles for 4-SMD packages. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components. Confirm RoHS3 compliance status if required by regulatory standards.

Selection Notes

Select this component when a 27.12 MHz reference is needed with ±30ppm stability in a small form factor. The 8pF load capacitance must match the oscillator circuit design. Consider the 50 Ohm ESR for drive level sensitivity. The wide temperature range suits industrial or automotive environments where standard commercial grades may fail.

Part Context

This crystal belongs to the QT325S series, a family of surface-mount quartz resonators optimized for high-volume manufacturing. The series offers various frequencies and package sizes, with the 3.2x2.5mm variant balancing size and performance. It serves as a direct replacement for similar industry-standard crystals in timing-critical applications.

Replacement Considerations

Publicly confirmed substitute part numbers include QT325G-27.120MAHV-T from QST. Verify electrical parameters such as ESR and load capacitance before substitution to ensure circuit compatibility.