LTC455GU-TR

Overview

The LTC455GU-TR is a ceramic filter manufactured by Transko Electronics, Inc., designed for AM radio receiver applications. It features a center frequency of 455kHz and a minimum bandwidth of 4.5kHz at the 6dB point. The component provides selective frequency filtering with an impedance of 1.5kOhm. It utilizes a 3-SMD, J-Lead package configuration to facilitate surface-mount integration into electronic circuits.

Feature Summary

• Provides selective frequency filtering for AM radio receiver applications
• Utilizes a 3-SMD, J-Lead package configuration
• Designed for precise center frequency operation

Applications

• AM radio receiver signal processing
• Intermediate frequency filtering in communication devices
• Selective frequency extraction in audio circuits

Procurement Notes

Verify the specific ordering suffix TR indicates tape and reel packaging when sourcing components. Confirm that the 1.5kOhm impedance specification matches the target circuit design requirements. Ensure compatibility with the 3-SMD J-Lead footprint during PCB layout validation. Cross-reference the manufacturer datasheet for any recent specification updates or revisions before final procurement decisions.

Selection Notes

Select this component based on its specific 455kHz center frequency requirement for AM broadcast band applications. Evaluate the 4.5kHz minimum bandwidth capability against the desired audio fidelity and adjacent channel rejection needs. Consider the surface-mount J-Lead form factor for automated assembly processes. Verify impedance matching with preceding and following stages to ensure optimal signal transfer efficiency.

Part Context

This part belongs to the family of ceramic filters produced by Transko Electronics, Inc., specifically engineered for intermediate frequency applications. It shares functional similarities with other models like the LTC455DU-TR but differs in package type and specific electrical tolerances. These components are standard solutions for maintaining signal integrity in analog radio reception systems requiring precise frequency discrimination.

Replacement Considerations

The LTM455GU is a documented substitute within the same manufacturer's portfolio, featuring a 4-pin configuration instead of the 3-SMD J-Lead format. Direct pin-to-pin replacement is not guaranteed due to the package difference; adapter boards or redesign may be necessary. Verify electrical parameters match exactly before substituting.