QTM216J-125.000MDJ-T

Overview

The QTM216J-125.000MDJ-T is a surface-mount crystal oscillator manufactured by QST, operating at a nominal frequency of 125 MHz. It utilizes CMOS output logic and requires a supply voltage of 1.8V. The device features an enable/disable function for power management control. Frequency stability is rated at ±50ppm over the specified temperature range. The component operates within a temperature range of -40°C to +105°C and is housed in a compact 4-SMD, No Lead package with dimensions of 2mm x 1.6mm.

Feature Summary

• Integrated CMOS output stage providing standard digital clock signals
• Dedicated enable and disable pin functionality for system power optimization
• High-frequency stability ensuring precise timing performance
• Compact surface-mount footprint suitable for space-constrained designs

Applications

• High-speed digital signal processing systems requiring precise clocking
• Telecommunications equipment utilizing 125 MHz reference frequencies
• Embedded systems with strict power management requirements
• Industrial control modules operating in extended temperature environments

Procurement Notes

Verify that the specific ordering suffix matches the required frequency tolerance and package type. Confirm that the supply voltage aligns with the 1.8V specification before integration. Ensure the enable/disable pin configuration is compatible with the host controller's logic levels. Check for any updated revision notes regarding electrical characteristics or mechanical dimensions prior to finalizing the bill of materials.

Selection Notes

Select this component when a stable 125 MHz clock source is required in a minimal footprint. The CMOS output is suitable for direct interfacing with most digital logic families. Consider the ±50ppm stability requirement against system timing budgets. The wide operating temperature range makes it appropriate for industrial applications where thermal extremes are expected.

Part Context

This oscillator belongs to the QTM216J series from QST, designed for high-reliability surface-mount applications. The series offers various frequency options while maintaining consistent electrical characteristics and physical dimensions. It serves as a critical timing element in modern electronics where size and power efficiency are prioritized alongside performance stability.

Replacement Considerations

Consult official manufacturer substitution lists for verified equivalents. Cross-reference pinout compatibility and electrical specifications carefully. Verify that alternative components meet the same frequency stability and temperature range requirements.