QT325S-50.000MAHJ-T

Overview

The QT325S-50.000MAHJ-T is a surface-mount quartz crystal resonator manufactured by QST. It operates at a fundamental frequency of 50 MHz with a load capacitance of 18 pF and an equivalent series resistance of 50 Ohms. The component features a 4-SMD, no-lead package with dimensions of 3.2 x 2.5 x 0.7 mm. Frequency stability is specified at ±30 ppm at 25°C and ±30 ppm across the operating temperature range of -40°C to +85°C. The device is lead-free compliant.

Feature Summary

• Seam seal construction for environmental protection
• Lead-free RoHS compliant manufacturing
• Compact 4-SMD no-lead surface mount form factor

Applications

• Clock signal generation in digital circuits
• Microcontroller system oscillators
• Communication module timing references

Procurement Notes

Verify the specific suffix MAHJ-T against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure the required load capacitance matches the target circuit design. Confirm that the 4-SMD no-lead package style is compatible with the intended PCB assembly process and soldering profile requirements.

Selection Notes

Select this component when a 50 MHz reference is required with ±30 ppm stability over a wide industrial temperature range. The 18 pF load capacitance must align with the oscillator circuit design. Consider the physical size constraints of the 3.2x2.5 mm package during layout planning.

Part Context

This part belongs to the QT325S series of seam-seal quartz crystals. These components are designed for general-purpose timing applications requiring reliable performance in compact electronic devices. The series offers various frequency options within standard market demands.

Replacement Considerations

Direct substitutes include other manufacturers' 50 MHz crystals in 3225 packages with identical electrical parameters. Verify pin compatibility and thermal characteristics before substitution.