LTC455EU-TR

Overview

The LTC455EU-TR is a ceramic filter manufactured by Transko Electronics, Inc., designed for AM radio receiver applications. It features a center frequency of 455 kHz and a minimum bandwidth of 7.5 kHz at 6 dB attenuation. The component has an impedance of 1.5 kOhm and utilizes a 3-SMD, J-Lead package with dimensions of 7x6 mm. Packaged in tape and reel format, it serves as a selective frequency filtering solution for intermediate frequency stages in communication systems.

Feature Summary

• Provides selective frequency filtering for AM radio receivers
• Utilizes ceramic construction for stable intermediate frequency performance
• Designed for surface mount integration via J-Lead configuration

Applications

• AM radio receiver intermediate frequency stages
• Selective frequency filtering in communication circuits
• Signal processing in broadcast reception systems

Procurement Notes

Verify the specific suffix TR indicates tape and reel packaging when sourcing. Confirm the 3-SMD J-Lead footprint matches the target PCB layout. Ensure the 1.5 kOhm impedance aligns with the circuit design requirements. Cross-reference the manufacturer part number to avoid confusion with similar variants like the LTC455DU-TR which may have different bandwidth specifications.

Selection Notes

Select this component for applications requiring a 455 kHz center frequency with narrow 7.5 kHz bandwidth. The 1.5 kOhm impedance must match the preceding and following circuit stages. Consider the SMD J-Lead package for automated assembly processes. Verify that the ceramic filter technology meets the environmental and stability needs of the final product.

Part Context

Transko Electronics produces various ceramic filters for radio frequency applications. The LTC455 series includes multiple variants such as the LTC455EU and LTC455DU. These components are standard solutions for AM broadcast band reception. The EU variant specifically targets the 455 kHz intermediate frequency requirement common in analog radio designs.

Replacement Considerations

The LTC455DU-TR is a related part but specifies a 20 kHz bandwidth, which differs from the 7.5 kHz bandwidth of the LTC455EU-TR. Substitution requires verifying if the wider bandwidth is acceptable for the application. Other generic 455 kHz ceramic filters may be considered if impedance and package compatibility are confirmed.