QTM216J-125.000MBJ-T

Overview

The QTM216J-125.000MBJ-T is a standard CMOS oscillator manufactured by QST, operating at a nominal frequency of 125 MHz. It utilizes a crystal base resonator and features a 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The device supports a supply voltage of 3.3V and includes an enable/disable function for power management. It offers a frequency stability of ±50 ppm and operates within a temperature range of -40°C to +85°C. The output format is low EMI CMOS, suitable for high-speed digital circuits requiring precise clock signals.

Feature Summary

• Integrated enable/disable control for efficient power management in portable applications
• Low electromagnetic interference (EMI) CMOS output reduces signal noise in sensitive circuits
• Compact 4-SMD no-lead surface mount package facilitates automated assembly and space-constrained designs

Applications

• High-speed data communication interfaces requiring stable clock sources
• Embedded systems and microcontroller boards needing precise timing references
• Consumer electronics devices with strict size and power consumption constraints

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm that the 3.3V supply requirement aligns with the target system's voltage rails. Ensure the ±50 ppm stability meets the application's jitter tolerance. Check that the 4-SMD footprint matches the PCB layout silkscreen and pad design. Validate the -40°C to +85°C industrial temperature range against environmental conditions.

Selection Notes

Select this component when a compact, low-cost XO with enable functionality is required. Compare stability requirements against ±50 ppm; consider TCXO variants if higher precision is needed. Evaluate the 125 MHz frequency against available alternatives like the QTM216E series for different form factors. Assess the 3.3V logic compatibility with downstream components. Review thermal performance within the specified operating range.

Part Context

This part belongs to the QTM216J series of surface-mount oscillators from QST. It shares the same 2.0x1.6 mm footprint as other models in the family but differs in frequency and stability specifications. The J-series typically denotes specific pinout or feature configurations compared to the E-series. It serves as a direct replacement for legacy through-hole crystals in modern SMT production lines.

Replacement Considerations

Direct substitutes include other QTM216J variants with matching frequencies such as QTM216J-100.000MBJ-T or QTM216J-30.000MBJ-T if frequency adjustment is acceptable. Cross-reference with QTM216E-125.000MBM-T for similar performance in a slightly different package. Verify pin compatibility before swapping between series.