RFCS04028000DBTWS

Overview

The RFCS04028000DBTWS is a silicon-based radio frequency capacitor from the Vishay Electro-Films RFCS series. It features a nominal capacitance of 0.8 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 exhibits a temperature coefficient of 100 ppm/°C.

Feature Summary

• Utilizes silicon thin-film technology for stable high-frequency performance
• Designed for compact surface-mount integration in RF circuits
• Provides precise capacitance control suitable for signal processing applications

Applications

• RF signal coupling and decoupling
• Impedance matching networks
• High-frequency filtering circuits

Procurement Notes

This component is officially classified as obsolete and is no longer manufactured by Vishay. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors or secondary market suppliers. Buyers must confirm the specific manufacturing date code and storage conditions to ensure component integrity before integration into new designs.

Selection Notes

Engineers selecting this part should consider its discontinued status when planning long-term production runs. Alternative components within the same RFCS series or comparable silicon capacitors from other manufacturers may offer similar electrical characteristics. Designers should evaluate pin compatibility and thermal stability requirements to ensure seamless substitution without redesigning the PCB layout.

Part Context

The RFCS04028000DBTWS belongs to the RFCS family of silicon capacitors produced by Vishay Electro-Films. This series is characterized by its use of silicon dielectric material rather than traditional ceramic or polymer films. The 0402 package size allows for high-density mounting on printed circuit boards, catering to the miniaturization trends in modern electronic devices.

Replacement Considerations

• RFCS04026000DBTT1