QTM252E-25.000MBM-T

Overview

The QTM252E-25.000MBM-T is a standard clock oscillator manufactured by QST Products LLC, designed for precision timing applications. It features a CMOS output with low electromagnetic interference characteristics and operates at a nominal frequency of 25 MHz. The device supports a supply voltage of 3.3V and offers a frequency stability of ±50ppm. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.5x2.0 mm. The component is rated for an operating temperature range of -40°C to 125°C, ensuring reliability in demanding environments.

Feature Summary

• Low EMI CMOS output technology for signal integrity
• Compact 2.5x2.0mm surface mount package
• Wide industrial temperature rating up to 125°C
• Integrated enable/disable functionality

Applications

• High-speed digital logic circuits requiring precise clocking
• Embedded systems with strict size constraints
• Industrial control equipment operating in high temperatures
• Communication modules needing low jitter signals

Procurement Notes

Verify the specific suffix 'MBM' against official QST documentation to confirm the exact voltage and temperature grade. Ensure the ordering part number matches the required frequency tolerance and package type. Cross-reference with authorized distributors to confirm current availability and lead times, as stock levels may vary. Request updated datasheets to validate electrical parameters before finalizing procurement decisions.

Selection Notes

Select this component when a small footprint and wide temperature range are critical. The 3.3V supply requirement must align with the system's power rails. Consider the ±50ppm stability for applications where moderate frequency accuracy is sufficient. Verify that the CMOS output level is compatible with the receiving logic inputs without additional buffering.

Part Context

This oscillator belongs to the QTM252E series, which utilizes quartz crystal technology within a ceramic package. The series is characterized by its low electromagnetic interference profile and robust performance across extended temperature ranges. It serves as a direct replacement for larger oscillators in space-constrained designs requiring reliable timing sources.

Replacement Considerations

Direct substitutes include other 25MHz 3.3V CMOS oscillators in 2520 packages from manufacturers like TXC or Epson. Ensure compatibility regarding pinout, voltage levels, and load capacitance. Verify that alternative parts meet the same ±50ppm stability and -40°C to 125°C temperature specifications.