402F20411CDT

Crystals Overview

The CTS-Frequency Controls 402F20411CDT is a fundamental parallel quartz crystal designed for surface-mount applications. It operates at a nominal frequency of 20.48 MHz with a standard frequency tolerance and stability of ±10 ppm. The component features an 18 pF load capacitance and a maximum equivalent series resistance (ESR) of 100 Ohms. Packaged in a compact 4-SMD, No Lead form factor measuring 2.00mm x 1.60mm x 0.55mm, it supports tape and reel packaging compliant with EIA-418 standards.

Crystals Feature Summary

• Sub-miniature surface-mount design utilizing AT-cut fundamental crystal technology
• Hermetic ceramic package construction ensuring environmental durability
• Standardized EIA-418 tape and reel packaging for automated assembly

Crystals Applications

• Clock signal generation for microprocessors and digital logic circuits
• Frequency reference sources for communication modules
• Timing control in consumer electronics and embedded systems

Crystals Procurement Notes

Verify the specific ordering suffix to confirm the exact termination finish and packaging configuration required for your assembly process. Ensure that the selected variant matches the necessary frequency tolerance and stability specifications for your circuit design. Cross-reference the manufacturer's latest documentation to confirm current availability status and any potential obsolescence notices before finalizing procurement plans.

Crystals Selection Notes

Select this component when a precise 20.48 MHz reference is required in a constrained surface-mount footprint. The 18 pF load capacitance must align with the oscillator circuit's external capacitive requirements to maintain the specified ±10 ppm stability. Consider the 100 Ohm ESR limit to ensure adequate drive level compatibility within the target application's oscillator topology.

Crystals Part Context

This part belongs to the CTS 402 Series, which provides sub-miniature hermetic ceramic surface-mount crystals. The series covers a frequency range from 16 MHz to 96 MHz, offering fundamental crystal designs with standard tolerances. These components are engineered for high reliability in demanding electronic environments while maintaining a small physical profile suitable for modern PCB layouts.

Crystals Replacement Considerations

The 402F20411CDR is documented as a parameter-equivalent substitute within the same product family. Verify that the alternative variant maintains identical electrical characteristics, including frequency, load capacitance, and ESR, to ensure seamless integration without circuit redesign.