RFCS04021800CBTWS

Overview

The RFCS04021800CBTWS is a silicon-based radio frequency capacitor manufactured by Vishay Electro-Films. It features a capacitance of 1.8 pF with a tolerance of ±0.1 pF and a voltage rating of 50 V. The component utilizes a 0402 (1005 metric) surface mount package, measuring 1.02 mm in length, 0.51 mm in width, and 0.38 mm in height. It operates within a temperature range of -55°C to +125°C and has a temperature coefficient of 100 PPM/°C. The part is currently obsolete.

Feature Summary

• Utilizes silicon thin-film technology for stable RF performance
• High Q factor suitable for radio frequency applications
• Compact 0402 surface mount footprint

Applications

• RF circuit filtering
• Impedance matching networks
• Coupling and decoupling in high-frequency systems

Procurement Notes

This component is officially listed as obsolete or end-of-life by the manufacturer. Verification of availability should focus on remaining stock from authorized distributors or secondary market sources. Ensure that any sourced units are genuine and match the original specifications, as no new production is expected. Check for valid RoHS compliance documentation if required for specific regulatory standards.

Selection Notes

When selecting this component, consider its obsolete status and potential supply chain limitations. Verify that the 1.8 pF capacitance and 50 V rating meet the circuit requirements. The tight ±0.1 pF tolerance is critical for precision RF designs. Evaluate alternative components only if long-term supply stability is a primary concern, ensuring electrical compatibility with the original design parameters.

Part Context

The RFCS series represents Vishay's line of silicon capacitors designed for high-frequency applications. These components offer superior stability and low parasitic inductance compared to traditional ceramic capacitors. The 0402 package size allows for dense PCB layouts while maintaining performance integrity in compact electronic devices requiring precise RF signal handling.

Replacement Considerations

No public confirmed substitute part numbers are available for this specific obsolete model.