QT325G-25.000MAHJ-T

Overview

The QT325G-25.000MAHJ-T is a surface-mount quartz crystal oscillator manufactured by QST Products, LLC. It operates at a fundamental frequency of 25 MHz with a load capacitance of 18 pF and a frequency stability tolerance of ±30 ppm. The component features an equivalent series resistance (ESR) of 60 Ohms and supports an激励 level of 50 uW. It is housed in a compact 4-SMD, no-lead package measuring 3.2 mm x 2.5 mm x 0.8 mm. The device is rated for operation within a temperature range of -40°C to +85°C.

Feature Summary

• Provides precise timing signals with ±30 ppm frequency stability across the operating temperature range.
• Utilizes a compact 3.2mm x 2.5mm SMD footprint suitable for space-constrained PCB layouts.
• Designed for reliable performance in industrial environments with a wide temperature rating.

Applications

• Microcontroller clock sources
• Communication interface timing
• Digital signal processing circuits

Procurement Notes

Verify the manufacturer part number QT325G-25.000MAHJ-T against official QST documentation to ensure authenticity. Confirm that the specific suffix matches the required electrical parameters, including the 25 MHz frequency, 18 pF load capacitance, and ±30 ppm stability. Ensure compatibility with standard SMD reflow or wave soldering processes as indicated in the assembly guidelines.

Selection Notes

Select this component when a 25 MHz reference clock is required with moderate stability specifications. The 18 pF load capacitance must match the oscillator circuit design. Consider the 60 Ohm ESR value for driver strength requirements. The -40°C to +85°C range suits general commercial and industrial applications where extreme environmental resilience is not the primary constraint.

Part Context

This part belongs to the QT325G series of surface-mount crystals from QST Products. The series offers various frequencies within the same 3.2x2.5mm form factor. The 'MAHJ' suffix typically denotes specific stability and temperature characteristics consistent with the 25 MHz variant. It serves as a direct replacement for other 25 MHz crystals in similar packages within electronic designs.

Replacement Considerations

Direct substitutes include other 25 MHz crystals with identical 3.2x2.5mm dimensions, 18 pF load capacitance, and ±30 ppm stability. Verify pinout compatibility and ESR values before substitution. Cross-reference with TXC Corporation's 7M-25.000MAHJ-T for potential mechanical interchangeability, ensuring electrical parameters align with the original design requirements.