QT325G-12.288MAGV-T

Overview

The QT325G-12.288MAGV-T is a surface-mount crystal oscillator manufactured by QST, designed for precise timing applications. It operates at a fundamental frequency of 12.288 MHz with a load capacitance of 8 pF. The component features a frequency tolerance of ±30 ppm and a frequency stability of ±50 ppm over an extended operating temperature range of -40°C to +85°C. It utilizes a 4-SMD, no-lead package measuring 3.20mm x 2.50mm with a maximum seated height of 0.90mm. The device exhibits an equivalent series resistance (ESR) of 120 Ohms and is rated for AEC-Q200 automotive grade reliability.

Feature Summary

• Automotive-grade reliability compliant with AEC-Q200 standards
• Extended temperature operation from -40°C to +85°C
• Compact 4-SMD no-lead surface mount packaging
• Fundamental mode oscillation at 12.288 MHz

Applications

• Automotive electronic systems requiring robust timing references
• Embedded controller circuits in harsh thermal environments
• Wireless networking hardware components
• Industrial control modules needing stable clock signals

Procurement Notes

Verify the specific suffix 'GV' corresponds to the required ±50 ppm stability and -40°C to +85°C temperature range. Confirm that the 8 pF load capacitance matches the target circuit design. Ensure the 4-SMD no-lead footprint dimensions align with the PCB layout constraints. Check for RoHS3 compliance requirements if applicable to the final assembly.

Selection Notes

Select this component when automotive qualification is mandatory for timing accuracy. Choose based on the need for wide temperature stability exceeding standard commercial grades. Consider the 12.288 MHz frequency for baud rate generation or system clock division. Evaluate the 120 Ohm ESR against the oscillator circuit's drive level limitations.

Part Context

This part belongs to the QT325G series of quartz crystals from QST. The series offers various frequency and tolerance options within the same 3.2x2.5mm form factor. Different suffixes indicate variations in stability and temperature range. This specific model targets high-reliability sectors such as automotive and industrial automation.

Replacement Considerations

The STDCQS1-12.288M from NDK is documented as a parameter-equivalent substitute. Verify mechanical compatibility and electrical specifications before substitution.