LFB185G54CGLD708

Overview

The LFB185G54CGLD708 is a low-pass RF filter manufactured by Murata Electronics, designed for signal conditioning in radio frequency applications. It features a center frequency of 5.425GHz and a bandwidth of 1.5GHz with an insertion loss of 0.85dB. The component utilizes a surface-mount 0603 (1608 Metric) package with four printed circuit board pads, measuring 1.60mm in length, 0.80mm in width, and a maximum height of 0.60mm. It operates within a standard commercial temperature range and complies with RoHS3 specifications.

Feature Summary

• Provides low-pass filtering characteristics for RF signal paths
• Utilizes a compact four-terminal surface mount architecture
• Engineered for high-frequency signal conditioning applications

Applications

• RF front-end modules requiring signal filtering
• Wireless communication systems operating near 5.425GHz
• Signal conditioning circuits in electronic devices

Procurement Notes

Verify the specific ordering suffix to confirm the terminal configuration, as the LFB185 series includes variants with different pad counts. Confirm that the four-pad 0603 footprint aligns with the target PCB layout design. Ensure compliance with RoHS3 standards is required for the specific manufacturing batch. Cross-reference the datasheet for precise S-parameter data relevant to the intended frequency band.

Selection Notes

Select this component when a low-pass response is required at a 5.425GHz center frequency with a 1.5GHz bandwidth. The choice depends on the availability of a four-terminal 0603 package suitable for the assembly process. Consider the 0.85dB insertion loss specification against system sensitivity requirements. Evaluate the physical dimensions of 1.60mm x 0.80mm x 0.60mm for space-constrained designs.

Part Context

This part belongs to the LFB185 series of RF filters from Murata Electronics. The series offers various configurations including two-terminal and four-terminal options in the 0603 package size. Other variants in the family include models like LFB185G54CGLD602 and LFB185G42CGZE130, which differ in terminal count and insertion loss characteristics while maintaining similar frequency targets.

Replacement Considerations

Direct substitutes within the same series include LFB185G54CGLD602, though it utilizes a three-pad footprint instead of four. Designers must verify mechanical compatibility with the existing PCB land pattern before substitution. Electrical performance differences such as insertion loss variations between these specific part numbers should be evaluated.