LTC455BU-TR

Overview

The LTC455BU-TR is a ceramic filter manufactured by Transko Electronics, Inc., designed for AM radio applications. It features a center frequency of 455kHz and operates with a specified impedance of 1.5kOhm. The component utilizes a 3-SMD, J-Lead package configuration. Key electrical characteristics include a bandwidth of 20 kHz and an insertion loss of 5dB. The device meets RoHS compliance standards for environmental safety.

Feature Summary

• Designed specifically for AM radio signal processing
• Utilizes robust ceramic construction for stability
• Compatible with surface mount assembly processes

Applications

• AM radio receiver intermediate frequency stages
• Consumer audio equipment filtering
• Broadcast signal conditioning circuits

Procurement Notes

Verify the specific suffix designation to confirm tape-and-reel packaging requirements against standard bulk quantities. Ensure the 1.5kOhm impedance specification aligns with the target circuit design before procurement. Confirm RoHS compliance status if required by project specifications. Cross-reference the manufacturer part number with distributor catalogs to ensure availability and correct revision levels.

Selection Notes

Select this component when a 455kHz center frequency is required for AM demodulation stages. The 1.5kOhm impedance matches standard transistor amplifier outputs. Consider the 3-SMD J-Lead footprint for PCB layout constraints. Evaluate the 20kHz bandwidth against desired audio fidelity requirements. Verify thermal management needs based on the SMD package type.

Part Context

This component belongs to the family of ceramic filters produced by Transko Electronics, Inc. These devices are engineered to provide sharp selectivity and stable performance in intermediate frequency applications. The series typically includes variants with different impedances and bandwidths to suit various radio receiver architectures.

Replacement Considerations

Direct substitutes may include other 455kHz AM ceramic filters with matching 1.5kOhm impedance and similar physical footprints. Verify pin compatibility and electrical parameters such as insertion loss and bandwidth before substitution.