LFCN-1800D-1+

Overview

The LFCN-1800D-1+ is an LTCC low-pass filter from the Mini-Circuits LFCN series, designed for surface mount applications. It operates with a cutoff frequency of 1800 MHz and maintains a system impedance of 50 ohms. The component utilizes a compact 4-SMD, no-lead package with dimensions of 3.20mm x 1.60mm x 0.94mm. It features a typical insertion loss of 1 dB and offers high isolation in the stopband. The device is RoHS compliant and suitable for board mounting in RF signal conditioning circuits.

Feature Summary

• Utilizes Low Temperature Co-fired Ceramic (LTCC) technology for robust construction
• Provides effective signal attenuation above the 1800 MHz cutoff frequency
• Designed for direct surface mount integration onto printed circuit boards

Applications

• RF signal conditioning in communication systems
• Harmonic suppression in transmitter output stages
• Interference filtering in receiver front ends

Procurement Notes

Verify the specific suffix designation to ensure compatibility with required performance tolerances. Confirm that the 50-ohm impedance matches the target circuit design. Check for RoHS compliance requirements if operating in regulated environments. Ensure proper ESD handling procedures are followed during assembly due to the small form factor.

Selection Notes

Select this component when a sharp cutoff near 1800 MHz is required in a minimal footprint. Consider the LTCC material properties for thermal stability compared to other filter types. Evaluate the insertion loss specifications against system sensitivity requirements. Verify that the SMD package aligns with available PCB layout space and manufacturing capabilities.

Part Context

This part belongs to the LFCN series of LTCC low-pass filters manufactured by Mini-Circuits. The series is engineered for high-performance RF and microwave applications requiring reliable signal filtering. These components are widely used in wireless infrastructure and test equipment where consistent electrical performance is critical.

Replacement Considerations

Consult official Mini-Circuits documentation for verified substitute part numbers within the same series or equivalent specifications.