QT325S-12.288MAAE-T

Overview

The QT325S-12.288MAAE-T is a surface-mount quartz crystal resonator manufactured by QST Products, LLC. It operates at a fundamental frequency of 12.288 MHz with a load capacitance of 12 pF and an equivalent series resistance (ESR) of 80 Ohms. The component provides a frequency stability of ±10 ppm and supports a frequency tolerance of ±30 ppm. Designed for robust performance, it functions within an operating temperature range of -20°C to +70°C. The device utilizes a 4-SMD, no-lead package configuration, ensuring reliable integration into compact electronic assemblies.

Feature Summary

• Provides precise timing signals with high frequency stability suitable for communication protocols
• Features a compact surface-mount footprint for efficient PCB layout integration
• Operates reliably across standard industrial temperature ranges

Applications

• Embedded communication systems requiring stable clock sources
• Microcontroller unit (MCU) clock generation
• Human-machine interface (HMI) display projects

Procurement Notes

Verify the manufacturer designation as QST Products, LLC when sourcing this specific variant. Confirm that the 12.288 MHz frequency and 12 pF load capacitance match your circuit design requirements. Ensure the ±10 ppm stability specification aligns with your system's timing accuracy needs. Check for RoHS compliance status prior to final procurement decisions.

Selection Notes

Select this component when a 12.288 MHz fundamental frequency is required for serial communication standards such as UART or SPI. The 12 pF load capacitance must match the oscillator circuit design. Consider the 80 Ohm ESR value for drive level sensitivity. The 4-SMD package size dictates the available board space constraints for the assembly process.

Part Context

This part belongs to the QT325S series of quartz crystals from QST. It shares similar physical dimensions and mounting styles with other variants in the family, such as different frequency options like 10.000 MHz or 26.000 MHz. The series is designed for general-purpose timing applications where small form factors are critical.

Replacement Considerations

Direct substitutes include parts with identical electrical parameters and package dimensions. Verify compatibility with existing footprints if replacing with components from other manufacturers offering 12.288 MHz crystals in 4-SMD packages.