LFTC-4000+

Overview

The LFTC-4000+ is a surface-mount LTCC low-pass filter designed for RF applications. It provides a passband from DC to 4000 MHz with a 50-ohm impedance. The device features a cutoff frequency of approximately 5325 MHz, ensuring effective signal attenuation above the passband. Constructed using Low Temperature Co-fired Ceramic technology, it offers high reliability and compact form factor suitable for integration into modern electronic systems requiring precise frequency filtering.

Feature Summary

• Utilizes LTCC technology for robust construction
• Provides sharp roll-off characteristics above cutoff
• Designed for surface-mount integration

Applications

• RF front-end filtering
• Base station signal conditioning
• Wireless communication systems

Procurement Notes

Verify the specific datasheet version and mechanical dimensions against your PCB layout requirements. Confirm that the thermal management strategy accounts for linear power derating at elevated ambient temperatures. Ensure compatibility with standard reflow soldering profiles recommended for LTCC components to maintain electrical performance and structural integrity during assembly.

Selection Notes

Select this component when a low-pass response up to 4 GHz is required in a compact SMT package. Consider the physical footprint and terminal configuration for board space constraints. Evaluate insertion loss and stopband rejection specifications relative to system noise floor requirements. Verify impedance matching to minimize reflections within the operating bandwidth.

Part Context

This component belongs to Mini-Circuits' family of LTCC filters, which are engineered for high-performance RF and microwave applications. The series utilizes advanced ceramic materials to achieve stable electrical characteristics across temperature variations. These filters are commonly employed in telecommunications infrastructure where size reduction and reliability are critical design parameters.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify that any substitute maintains identical impedance, frequency range, and mounting style. Cross-reference mechanical drawings to ensure board compatibility without redesign.