QTM252J-25.000MDJ-T

Overview

The QTM252J-25.000MDJ-T is a standard CMOS quartz oscillator manufactured by QST, housed in a compact 4-SMD, No Lead package with dimensions of 2.5x2.0 mm. It operates at a nominal frequency of 25 MHz and supports a supply voltage range of 1.8V. The device features low jitter and phase noise characteristics, ensuring signal integrity for high-speed digital circuits. Frequency stability is rated at +/-50ppm across the extended industrial temperature range of -40°C to +105°C. The output interface is compatible with standard CMOS logic levels, facilitating direct integration into microcontroller and processor clock inputs without additional level shifting components.

Feature Summary

• Integrated enable/disable control functionality for power management optimization
• Low electromagnetic interference (EMI) design suitable for sensitive applications
• Robust ceramic construction providing reliability in harsh environments

Applications

• Automotive electronic systems requiring AEC-Q200 compliance
• Consumer electronics and smart home devices
• Industrial control and monitoring equipment

Procurement Notes

Verify the specific suffix MDJ-T against the official QST datasheet to confirm the exact frequency tolerance, operating voltage, and temperature range. Ensure that the procurement channel provides genuine components with traceable manufacturing dates. Cross-reference the package marking with the manufacturer's identification guide to prevent counterfeit substitution during assembly.

Selection Notes

Select this component when a small form factor is required alongside strict temperature stability in automotive or industrial contexts. The 1.8V supply voltage makes it suitable for modern low-power logic families. Consider the +/-50ppm stability requirement against system clock accuracy needs. Verify that the 25MHz frequency aligns with the target peripheral clock requirements.

Part Context

This part belongs to the QTM252J series of surface-mount quartz oscillators from QST. The series is characterized by its miniature 2520 footprint and CMOS output compatibility. It is designed to replace larger through-hole crystals or older generation SMD oscillators where space constraints and power efficiency are critical design parameters.

Replacement Considerations

Direct pin-to-pin replacements within the same series include QTM252J-48.000MDJ-T for different frequencies. Verify electrical compatibility before substituting with other manufacturers' 2520 packages.