CFWLB455KC4Y-B0

Overview

The Murata CFWLB455KC4Y-B0 is a ceramic bandpass filter from the CERAFIL series, designed for signal conditioning applications. It operates at a center frequency of 455 kHz with a nominal impedance of 1.5 kOhms. The device features a five-pin cube package with through-hole termination, measuring a maximum height of 6.60 mm. It supports a signal bandwidth of up to 12.5 kHz and functions within an operating temperature range of -20°C to +80°C.

Feature Summary

• Utilizes ceramic construction for stable signal filtering performance
• Provides defined bandwidth support for communication signal conditioning
• Designed for board mount installation via through-hole pins

Applications

• Intermediate frequency filtering in radio receivers
• Signal conditioning in communication equipment
• Bandpass filtering in analog circuit designs

Procurement Notes

This component is officially classified as End-of-Life (EOL) by Murata Electronics. Public documentation indicates product withdrawal notices are active. Availability is restricted or non-existent through standard distribution channels. Verification of current stock status requires direct inquiry with authorized suppliers or distributors, as inventory levels fluctuate and may be limited.

Selection Notes

Engineers should consider this part only if legacy compatibility is required, given its discontinued status. Designers must verify that the 455 kHz center frequency and 1.5 kOhm impedance match their circuit requirements. Due to the EOL designation, alternative components with similar electrical specifications should be evaluated for new designs to ensure long-term supply chain stability.

Part Context

The CFWLB455KC4Y-B0 belongs to the Murata CERAFIL family of ceramic filters. These components are specialized for precise frequency selection in electronic circuits. The specific model utilizes a multi-element ceramic structure housed in a compact cube package, distinguishing it from surface-mount variants like the CFUKF series or other leaded options within the broader filter portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is obsolete, engineers must identify alternatives based on matching electrical parameters such as 455 kHz frequency, 1.5 kOhm impedance, and 12.5 kHz bandwidth. Cross-referencing with current Murata ceramic filter catalogs is recommended.