QT121S-76.800MDIQ-T

Crystals Overview

The QT121S-76.800MDIQ-T is a surface-mount MHz crystal manufactured by FTS, designed for precise frequency generation in electronic circuits. It operates at a nominal frequency of 76.8 MHz and utilizes the QT121S series architecture. The component features a compact 4-SMD package with dimensions of 1.2x1.0mm, facilitating integration into space-constrained designs. It is supplied in tape and reel packaging to support automated assembly processes. Key electrical specifications include a load capacitance of 9.9pF, an initial frequency tolerance of 12ppm, and a frequency stability of 17ppm over the operating temperature range.

Crystals Feature Summary

• Compact 1.2x1.0mm surface-mount footprint suitable for high-density PCB layouts
• High-frequency operation at 76.8 MHz for clock signal applications
• Tape and reel packaging format optimized for automated pick-and-place manufacturing

Crystals Applications

• Clock signal generation for microprocessors and digital logic circuits
• Frequency reference sources in communication modules
• Timing components in portable consumer electronics

Crystals Procurement Notes

Verify the manufacturer part number QT121S-76.800MDIQ-T against official FTS documentation to confirm authenticity. Ensure the received components match the specified 4-SMD package and 76.8 MHz frequency rating. Check that the supply chain provides valid traceability records. Confirm compliance with RoHS directives if required by the end application. Validate that the tape and reel packaging integrity remains intact upon receipt.

Crystals Selection Notes

Select this component when a 76.8 MHz frequency reference is required in a minimal 1.2x1.0mm SMD form factor. Consider the 12ppm initial tolerance and 17ppm total stability for applications demanding moderate precision. Evaluate the 9.9pF load capacitance requirement against the oscillator circuit design. This part is appropriate for automated production lines due to its tape and reel configuration.

Crystals Part Context

This crystal belongs to the QT121S series from FTS, which focuses on small-form-factor surface-mount oscillators. The series targets modern electronics requiring reduced board space without compromising frequency accuracy. The 76.8 MHz variant serves specific timing needs distinct from standard 32.768 kHz or 25/50 MHz common frequencies.

Crystals Replacement Considerations

Consult the FTS cross-reference tool for parametrically similar parts. Verify that any substitute matches the 76.8 MHz frequency, 1.2x1.0mm package, and 9.9pF load capacitance. Ensure the replacement maintains equivalent stability and tolerance ratings.