QT325G-16.384MAHV-T

Overview

The QT325G-16.384MAHV-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 16.384 MHz with a load capacitance of 8 pF and an equivalent series resistance (ESR) of 60 Ohms. The component features a frequency tolerance of ±30 ppm and supports an operating temperature range from -40°C to +85°C. It utilizes a 4-SMD, No Lead package with physical dimensions of 3.2 x 2.5 x 0.8 mm.

Feature Summary

• Fundamental mode operation ensures stable oscillation characteristics.
• Compact SMD form factor facilitates automated surface-mount assembly.
• Wide commercial temperature range supports diverse environmental conditions.

Applications

• Embedded communication systems requiring precise clock signals
• Microcontroller unit (MCU) clock sources
• Digital signal processing circuit timing references

Procurement Notes

Verify the specific suffix HV against the manufacturer's official datasheet to confirm the exact load capacitance and tolerance specifications. Ensure the selected variant matches the required operating temperature range and package dimensions for the target PCB layout. Cross-reference the ESR value with the oscillator circuit design requirements to guarantee reliable startup and stability.

Selection Notes

Select this component when a 16.384 MHz fundamental frequency is required with a compact footprint. Consider the 8 pF load capacitance compatibility with the host oscillator circuit. Evaluate the ±30 ppm tolerance against system timing accuracy needs. Confirm that the 60 Ohm ESR aligns with the driving level constraints of the application circuit.

Part Context

This part belongs to the QT325G series of surface-mount crystals from QST. The series offers various frequency options and tolerance grades. The HV suffix denotes specific electrical parameters within this family. This model provides a standard solution for general-purpose timing applications where moderate stability and small size are prioritized.

Replacement Considerations

The QT325G-16.384MAHE-T is a related variant with 12 pF load capacitance. Verify if the circuit can accommodate the different load capacitance before substitution. Other frequencies in the QT325G series may share the same package but differ electrically. Always consult the specific datasheet for pinout and parameter compatibility.