CDBKB455KCAY09-R0

Overview

The Murata CDBKB455KCAY09-R0 is a ceramic center frequency discriminator filter designed for signal conditioning applications. It operates at a nominal center frequency of 455 kHz with a bandwidth of 4 kHz. The component utilizes surface mount technology (SMD/SMT) and features a 2-SMD package with dimensions of 6.60mm x 6.00mm x 3.10mm. It supports board mounting and functions within an operating temperature range of -20°C to +80°C. The device is moisture sensitive and belongs to the CERAFIL series.

Feature Summary

• Integrated ceramic center frequency discrimination for precise signal filtering
• Surface mount design suitable for automated PCB assembly processes
• Compact physical footprint optimized for space-constrained electronic layouts

Applications

• Intermediate frequency stages in AM radio receivers
• Signal conditioning circuits requiring 455 kHz discrimination
• Consumer electronics utilizing ceramic filter technology

Procurement Notes

This component is officially listed as End-of-Life (EOL) by Murata Electronics. Verification of current availability through authorized distributors is essential, as stock levels are limited or non-existent. Engineers should consult official withdrawal notices and datasheets to confirm final lifecycle status before integrating this part into new designs.

Selection Notes

Select this component only if legacy compatibility with 455 kHz ceramic discriminator specifications is required. Verify that the 4 kHz bandwidth and 50Ω impedance align with system requirements. Due to its discontinued status, alternative solutions with equivalent electrical characteristics should be evaluated for long-term supply chain stability.

Part Context

The CDBKB455KCAY09-R0 belongs to Murata's CERAFIL series of ceramic filters. These components are engineered for high reliability in signal processing tasks. The specific model serves as a center frequency discriminator, distinguishing it from standard bandpass filters by its ability to demodulate or condition signals based on frequency deviation around the center point.

Replacement Considerations

Official substitutes are not explicitly confirmed in public documentation due to the EOL status. Designers must identify cross-compatible ceramic discriminators with matching 455 kHz center frequency, 4 kHz bandwidth, and 2-SMD package dimensions from other manufacturers.