QTM325-48.000MBB-T

Overview

The QTM325-48.000MBB-T is a quartz crystal oscillator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 48.0000 MHz with a CMOS output signal type. The device utilizes a standard XO configuration and is housed in a compact 4-SMD, no lead package with dimensions of 3.20mm x 2.50mm. It supports an operating temperature range of -10°C to +70°C and is compliant with RoHS standards, ensuring it is lead-free.

Feature Summary

• CMOS output interface for digital logic compatibility
• Compact 3.2x2.5mm surface-mount footprint
• RoHS compliant and lead-free construction

Applications

• General purpose clock generation for microcontrollers
• Timing reference for embedded systems
• Digital communication interfaces requiring stable clock sources

Procurement Notes

Verify the specific suffix BBT against official QST documentation to confirm exact tolerance and load capacitance specifications. Ensure the ordering part number matches the required frequency stability and output drive strength for the target application circuit design.

Selection Notes

Select this component when a 48MHz CMOS clock source is required in a small SMD package. Confirm that the -10°C to +70°C industrial temperature range meets the environmental requirements of the end product. Verify power supply voltage compatibility with the system architecture before integration.

Part Context

This model belongs to the QST QTM325 series of miniature quartz oscillators. The series offers various frequencies and packages, with the 325 variant providing a balance between size and performance. The 48MHz frequency is commonly used in USB and Ethernet applications.

Replacement Considerations

Direct substitutes include other 48MHz CMOS oscillators in 3.2x2.5mm packages from manufacturers such as Epson or Seiko. Verify pinout compatibility and electrical parameters before swapping. Cross-reference with QST datasheets for alternative suffixes offering different temperature ranges.