QT325G-14.31818MAAE-T

Overview

The QT325G-14.31818MAAE-T is a surface-mount crystal resonator manufactured by QST, designed for precision timing applications. It operates at a fundamental frequency of 14.31818 MHz with a load capacitance of 12 pF and an equivalent series resistance (ESR) of 100 Ohms. The device features a frequency stability of ±30 ppm within the operating temperature range of -20°C to +70°C. Packaged in a compact 4-SMD, No Lead form factor, this component provides reliable clock signals for digital circuits while maintaining low power consumption and high reliability standards.

Feature Summary

• Compact 4-SMD no-lead package design for automated surface-mount assembly
• High frequency stability of ±30 ppm across specified industrial temperature ranges
• Optimized electrical characteristics including 12pF load capacitance and 100 Ohm ESR

Applications

• Microcontroller unit (MCU) clock sources
• Communication interface timing circuits
• Digital signal processing systems

Procurement Notes

Verify the complete part number against official QST documentation to ensure correct suffix alignment. Confirm that the 'AAE' suffix corresponds to the required ±30 ppm stability and -20°C to +70°C temperature range. Request manufacturer datasheets to validate physical dimensions and soldering profile recommendations before integration into production designs.

Selection Notes

Select this component when a 14.31818 MHz reference is required for standard microcontroller architectures. Ensure the application environment remains within the -20°C to +70°C operational limits to maintain specified frequency accuracy. Compare load capacitance requirements with the oscillator circuit design to guarantee stable oscillation without external trimming adjustments.

Part Context

This model belongs to the QT325G series of quartz crystal resonators from QST. The series offers various frequency options and stability grades tailored for consumer electronics and industrial control systems. The specific variant utilizes a standard AT-cut quartz element housed in a lead-free SMD package suitable for reflow soldering processes.

Replacement Considerations

Direct substitutes must match the 14.31818 MHz frequency, 12pF load capacitance, and 4-SMD footprint. Verify equivalent ESR values and temperature stability ratings to ensure circuit compatibility.