402F204XXCDR

Crystals Overview

The 402F204XXCDR is a passive crystal oscillator manufactured by CTS-Frequency Controls. It operates at a fundamental frequency of 20.48 MHz with a frequency stability of ±15 ppm and a tolerance of ±10 ppm. The component features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 100 Ohms. It utilizes a 4-SMD, No Lead package with dimensions of 2.00 mm x 1.60 mm and a maximum height of 0.55 mm. Designed for surface mount installation, it supports a wide operating temperature range from -40°C to +85°C and complies with RoHS3 standards.

Crystals Feature Summary

• Fundamental mode crystal design housed in a standard 2.0mm x 1.6mm seam-welded SMD package.
• Capable of maintaining frequency stability within ±15 ppm across the specified industrial temperature range.
• Compliant with RoHS3 directives and REACH regulations for environmental safety.

Crystals Applications

• Clock signal generation for microprocessors and microcontrollers
• Timing references for communication interfaces such as USB and Ethernet
• Frequency synthesis in wireless transceivers and RF modules

Crystals Procurement Notes

Verify the specific suffix codes against the official CTS datasheet to ensure exact electrical parameters match the design requirements. Confirm that the 18pF load capacitance aligns with the host circuit's oscillator configuration. Check for updated compliance certifications such as RoHS3 status prior to finalizing procurement orders to ensure regulatory adherence.

Crystals Selection Notes

Select this component when a compact 2.0x1.6mm footprint is required for high-frequency timing applications. Ensure the host circuit can accommodate the 100 Ohm ESR and 18pF load capacitance specifications. Consider the ±15ppm stability requirement relative to system jitter sensitivity. Verify that the -40°C to +85°C temperature range covers the intended operational environment.

Crystals Part Context

This part belongs to the CTS Model 402 series, which offers a range of fundamental crystals in a small surface-mount package. The series provides various frequency options between 16MHz and higher ranges, catering to diverse digital timing needs. The 402 series is widely used in consumer electronics and industrial equipment requiring reliable clock sources in space-constrained designs.

Crystals Replacement Considerations

Direct substitutes include other 20.48 MHz crystals with identical 18pF load capacitance, ±15ppm stability, and 4-SMD 2.0x1.6mm packaging. Cross-reference with CTS part numbers like 402F204XXCKR or 402F204XXCLT if pinout and mechanical dimensions are compatible. Ensure any replacement maintains the same ESR and temperature rating.