LFCN-490+

Overview

The LFCN-490+ is an LTCC low pass filter designed for a cutoff frequency of 490 MHz with a 50Ω impedance. It operates from DC to the specified cutoff point, providing signal filtering in RF applications. The component utilizes ceramic technology for compact integration and features a surface-mount package suitable for automated assembly.

Feature Summary

• Low pass filtering capability up to 490 MHz
• LTCC construction for compact form factor
• 50Ω system impedance compatibility

Applications

• RF front-end filtering
• Signal integrity enhancement in communication systems
• Harmonic suppression

Procurement Notes

Verify the specific suffix requirements against your design needs. The standard LFCN-490+ does not support DC pass-through; if DC continuity is required, consider the D-suffix variant. Confirm package dimensions and thermal characteristics match your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a sharp cutoff at 490 MHz is necessary within a 50Ω environment. Ensure the application does not require DC pass-through, as this model blocks DC. Evaluate insertion loss specifications in the datasheet to ensure signal attenuation meets system requirements.

Part Context

This part belongs to Mini-Circuits' LFCN series of ceramic filters. These components are engineered for high performance in RF and IF circuits. The series offers various cutoff frequencies to suit different bandwidth requirements while maintaining consistent electrical characteristics across the product line.

Replacement Considerations

For designs requiring DC pass-through, the LFCN-490D+ serves as a functional substitute with identical filtering characteristics but added DC connectivity. Verify pinout compatibility and physical dimensions when substituting.