QT325G-26.000MAHQ-T

Overview

The QT325G-26.000MAHQ-T is a fundamental quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 26 MHz with a frequency tolerance of ±10 ppm across the temperature range of -30°C to +85°C. The component features a load capacitance of 8 pF and an equivalent series resistance (ESR) of 60 Ohms. It utilizes a glass-sealed package in a 4-SMD, no-lead form factor with dimensions of 3.2 x 2.5 x 0.8 mm, ensuring reliability in compact electronic designs.

Feature Summary

• Glass-sealed construction for enhanced environmental stability
• Surface-mount design compatible with automated assembly processes
• High frequency stability within specified industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication module timing references
• Industrial control system oscillators

Procurement Notes

Verify the specific suffix 'HQ' against official QST documentation to confirm the ±10 ppm tolerance and -30°C to +85°C operating range. Ensure the 8 pF load capacitance matches the target circuit design requirements. Confirm the 4-SMD no-lead package dimensions align with PCB footprint specifications before procurement.

Selection Notes

Select this component when precise frequency stability is required in space-constrained designs. The glass-seal technology offers superior protection against moisture and contaminants compared to standard epoxy packages. Consider the 60 Ohm ESR value for oscillator circuit compatibility and ensure the 26 MHz fundamental frequency meets the system's timing needs.

Part Context

This part belongs to the QT325G series from QST, which specializes in miniature surface-mount crystals. The series is characterized by its small 3250 package size and robust performance. The 'H' suffix typically denotes the ±10 ppm tolerance variant, while 'Q' indicates the specific temperature range and package type within the manufacturer's coding system.

Replacement Considerations

Cross-reference with other 3250 package crystals offering 26 MHz, 8 pF load, and ±10 ppm tolerance. Verify that substitute components maintain similar ESR values and package dimensions to ensure mechanical and electrical compatibility without redesigning the host circuit.