QT121S-26.000MDIV-T

Overview

The QT121S-26.000MDIV-T is an ultra-miniature, low-profile crystal oscillator manufactured by QST. It operates at a fundamental frequency of 26.000 MHz with a frequency tolerance of ±30 ppm. The component features a load capacitance of 8 pF and utilizes a 4-SMD, no lead package configuration. Designed for timing applications requiring compact form factors, this device provides stable oscillation within specified environmental parameters typical for surface-mount integration.

Feature Summary

• Ultra-miniature and low-profile physical design suitable for space-constrained PCB layouts
• Fundamental mode operation providing precise timing signals at 26 MHz
• Surface-mount construction with no lead terminals for automated assembly compatibility

Applications

• Compact consumer electronics requiring precise clock sources
• Portable communication devices needing small footprint timing components
• Industrial control systems utilizing surface-mount crystal oscillators

Procurement Notes

Verify the specific suffix 'D' in the part number against official QST documentation to confirm exact frequency tolerance and temperature range specifications. Ensure the ordering information matches the required load capacitance and package type before finalizing procurement orders to avoid integration errors.

Selection Notes

Select this component when a 26 MHz fundamental frequency crystal is required in an ultra-miniature SMD package. Consider the ±30 ppm tolerance and 8 pF load capacitance requirements of the host circuit. Evaluate thermal stability needs against the standard operating range defined in the manufacturer's datasheet for this series.

Part Context

This part belongs to the QT121S series from QST, which specializes in ultra-miniature and low-profile crystals. The series is designed for applications demanding minimal board space while maintaining reliable timing performance. QST positions these components as solutions for modern electronic designs prioritizing compactness and surface-mount efficiency.

Replacement Considerations

Consult official QST substitution guides for compatible alternatives. Verify that any substitute maintains identical frequency, load capacitance, and package dimensions. Cross-reference electrical characteristics to ensure circuit compatibility without modifying existing design parameters.