402F204XXCDT

Crystals Overview

The CTS-Frequency Controls 402F204XXCDT is a surface-mount quartz crystal resonator operating at a fundamental frequency of 20.48 MHz. It features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 100 Ohms. The component utilizes a 4-SMD, No Lead package with dimensions of 2.00 mm x 1.60 mm and a maximum height of 0.031 inches (0.80 mm). Designed for through-hole or surface-mount applications, it offers a frequency tolerance of ±15 ppm and stability of ±15 ppm within an operating temperature range of -20°C to +70°C.

Crystals Feature Summary

• Fundamental mode operation for stable frequency generation
• Compact 4-SMD no-lead package design for automated assembly
• RoHS compliant construction supporting environmental regulations

Crystals Applications

• Digital clock signal generation in microcontroller systems
• Data communication interface timing references
• Consumer electronics requiring precise frequency standards

Crystals Procurement Notes

Verify the specific suffix code corresponding to your required tolerance and packaging configuration when ordering, as the base model number represents a family. Confirm that the 18 pF load capacitance matches your circuit design requirements. Ensure the surface-mount footprint aligns with your PCB layout specifications before finalizing procurement.

Crystals Selection Notes

Select this component when a fundamental mode crystal is preferred over overtone modes for lower power consumption and simpler circuit design. The 18 pF load capacitance requires matching external capacitors in the oscillator circuit. Consider the 100 Ohm ESR limit to ensure reliable startup conditions within your specific oscillator topology.

Crystals Part Context

This part belongs to the 402 Series of surface-mount crystals from CTS-Frequency Controls. These components are designed to replace older through-hole crystals in modern compact electronic devices. The series provides various frequency options and package sizes to support diverse industrial and consumer applications requiring reliable timing sources.

Crystals Replacement Considerations

Direct substitutes include other 402 series variants with identical 20.48 MHz frequency and 18 pF load capacitance. Verify pin compatibility and dimensional tolerances when cross-referencing with competitor SMD crystals. Ensure the replacement maintains the same fundamental mode operation and ESR characteristics.