CFWLA450KEFA-B0

Overview

The Murata CFWLA450KEFA-B0 is a discontinued five-element ceramic intermediate frequency (IF) filter from the CERAFIL series. Designed for through-hole board mounting, it operates at a nominal center frequency of 450 kHz with an impedance of 1.5 kOhms. The component features a cube package with five pins and supports a wide operating temperature range from -20°C to +80°C. It utilizes area expansion mode technology for signal conditioning applications.

Feature Summary

• Five-element ceramic construction for precise intermediate frequency filtering
• Area expansion mode design for stable performance
• Through-hole radial pin configuration for board mounting

Applications

• Aircraft equipment signal processing
• Aerospace communication systems
• Undersea equipment interfaces

Procurement Notes

This component is officially classified as End-of-Life (EOL) by Murata Electronics. Verification of availability requires checking authorized distributors for remaining stock or approved substitute part numbers. Do not assume current manufacturing support. Confirm RoHS compliance status via official datasheets before integration into new designs.

Selection Notes

Select this part only for legacy system maintenance or repair where exact form-factor compatibility is required. The 1.5 kOhm impedance and 450 kHz center frequency are specific constraints. Verify that the five-pin through-hole footprint matches the existing PCB layout. Consider modern surface-mount alternatives if redesigning the circuit.

Part Context

Part of the Murata CERAFIL CFWLA series, which specializes in leaded ceramic filters for IF stages. This model represents a standard 450 kHz solution used in professional audio and communications hardware requiring high selectivity and low insertion loss within the specified temperature range.

Replacement Considerations

Official substitutes include CFWLB450KFFA-B0 (four elements, 2000 Ohm) or CFWKA450KFFAR0 (surface mount). Verify impedance and element count differences against circuit requirements before substitution.