LFTC-5400+

Overview

The LFTC-5400+ is a low-pass ceramic filter manufactured by Mini-Circuits, designed for RF signal conditioning applications. It features a cutoff frequency of 6.41 GHz and operates with a system impedance of 50 Ohms. The component utilizes LTCC (Low Temperature Co-fired Ceramic) technology to ensure stability and performance across a wide temperature range. It is housed in a compact 6-SMD, no-lead surface mount package measuring 3.81 mm x 3.81 mm x 0.99 mm. This filter supports frequencies from DC up to its specified cutoff point, providing effective attenuation of higher-frequency signals while maintaining signal integrity in the passband.

Feature Summary

• Utilizes Low Temperature Co-fired Ceramic (LTCC) construction for robust signal filtering
• Provides low-pass filtering characteristics with a defined cutoff frequency
• Designed for surface mount integration into high-density PCB layouts
• Maintains 50 Ohm impedance matching for standard RF systems

Applications

• RF front-end modules requiring harmonic suppression
• Wireless communication infrastructure base stations
• Test and measurement equipment signal conditioning
• Satellite communication receiver inputs

Procurement Notes

Verify the specific suffix designation when ordering, as packaging variations such as tape-and-reel quantities may differ from standard bulk configurations. Confirm that the 6-SMD footprint matches your board design constraints. Ensure compatibility with RoHS compliance requirements if operating in regulated markets. Cross-reference the manufacturer part number directly with official Mini-Circuits documentation to avoid substitution errors with similar series components.

Selection Notes

Select this component when a precise 6.41 GHz cutoff is required for low-pass filtering in 50 Ohm environments. Consider the physical dimensions of the 3.81 mm square package against available PCB real estate. Evaluate thermal management needs based on the specified operating temperature range. Compare insertion loss and stopband rejection specifications against application requirements to ensure adequate signal isolation.

Part Context

The LFTC-5400+ belongs to the LFTC series of LTCC filters produced by Mini-Circuits. This series focuses on miniaturized, high-performance passive components for microwave and RF applications. The company specializes in designing components from DC to 86 GHz, offering solutions for telecommunications, aerospace, and defense sectors. The LFTC series is known for its reliability and consistent electrical performance in demanding electronic systems.

Replacement Considerations

Consult Mini-Circuits official substitution guides for equivalent parts within the LFTC series or other ceramic filter lines. Verify that any alternative component matches the 6.41 GHz cutoff frequency and 50 Ohm impedance exactly. Check pinout compatibility for the 6-SMD package before replacing. Ensure environmental ratings meet or exceed the original specification.