QTM750-25.000MBE-T

Overview

The QTM750-25.000MBE-T is a standard CMOS quartz oscillator manufactured by QST, designed for precise clock signal generation in digital circuits. It operates at a nominal frequency of 25 MHz with a frequency stability of ±50 ppm across the industrial temperature range of -40°C to +85°C. The device utilizes a 3.3V supply voltage and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 7.0mm x 5.0mm x 1.3mm, suitable for surface-mount assembly.

Feature Summary

• Integrated CMOS output driver for direct logic interface compatibility
• Hardware enable/disable pin for active power consumption reduction
• Industrial-grade temperature stability ensuring reliable operation in harsh environments
• Lead-free RoHS compliant construction for environmental safety

Applications

• Microprocessor and microcontroller clock sources
• Communication interface timing references
• Digital signal processing systems
• Embedded control boards

Procurement Notes

Verify the specific suffix 'BE' corresponds to the 3.3V supply and ±50ppm stability requirements for your design. Confirm that the 4-SMD no-lead footprint matches your PCB land pattern. Ensure the operating environment stays within the specified -40°C to +85°C range to maintain guaranteed frequency accuracy. Check for any specific reflow soldering profile recommendations provided in the official datasheet to prevent thermal damage during assembly.

Selection Notes

Select this component when a stable 25 MHz reference is required for 3.3V logic systems. The ±50ppm stability is adequate for most standard serial communication protocols. Consider the enable feature if system power efficiency is a priority. Compare against other frequencies in the QTM750 series if different clock speeds are needed, ensuring the package size remains compatible with the available board space constraints.

Part Context

This part belongs to the QTM750 series of surface-mount quartz oscillators from QST. The series offers various frequency options and supply voltages, identified by their alphanumeric suffixes. The QTM750 line is characterized by its small form factor and low noise performance, making it a common choice for modern compact electronic devices requiring precise timing signals without the bulk of through-hole components.

Replacement Considerations

Direct substitutes include other QTM750 variants with identical footprints but different frequencies or voltages, such as QTM750-25.000MCE-T (if voltage differs). Cross-manufacturer replacements require verifying pin compatibility, electrical specifications, and mechanical dimensions to ensure functional equivalence in the target application.