LTC455CW-TR

Overview

The LTC455CW-TR is a ceramic filter manufactured by Transko Electronics, Inc., designed for AM radio applications. It features a center frequency of 455 kHz with a bandwidth of 8 kHz at the 6 dB points. The component exhibits an insertion loss characteristic and operates with a nominal impedance of 1.5 kOhm. It is housed in a compact 4-SMD, J-Lead surface-mount package, facilitating integration into space-constrained electronic circuits requiring precise intermediate frequency filtering.

Feature Summary

• Provides selective signal filtering for AM broadcast bands
• Utilizes ceramic resonator technology for stable performance
• Designed for surface-mount assembly via J-Lead configuration

Applications

• AM radio receiver intermediate frequency stages
• Consumer audio equipment signal processing
• Communication device front-end filtering

Procurement Notes

Verify the specific suffix CW against the manufacturer's current datasheet to confirm the 8 kHz bandwidth specification. Ensure the 4-SMD J-Lead package dimensions match the PCB footprint requirements. Confirm that the 1.5 kOhm impedance rating aligns with the circuit design parameters before finalizing procurement orders.

Selection Notes

Select this component when a narrow 8 kHz bandwidth is required for AM demodulation. Compare the 4-SMD J-Lead form factor against available through-hole alternatives if board space permits. Validate the 455 kHz center frequency compatibility with the local oscillator settings of the target receiver architecture.

Part Context

Transko Electronics produces a family of LTC455 series ceramic filters differentiated by bandwidth and package type. Variants such as the LTC455DU-TR offer wider bandwidths, while others like the LTC455GU-TR utilize different pin counts. The CW suffix specifically denotes the 8 kHz bandwidth variant within this standardized product line.

Replacement Considerations

Direct substitutes include other 455 kHz AM ceramic filters with similar 8 kHz bandwidth specifications. Verify mechanical compatibility of the 4-SMD J-Lead package. Cross-reference impedance values to ensure circuit stability without redesigning surrounding passive components.