LFB182G45SG9B740

Overview

The Murata LFB182G45SG9B740 is a surface-mount RF bandpass filter designed for the 2.45 GHz ISM band. It features a center frequency of 2.45 GHz with a bandwidth of 50 MHz. The component exhibits an insertion loss of 1.8 dB and a ripple of 0.7 dB. Housed in a compact 0603 (1608 metric) package measuring 1.60mm x 0.80mm x 0.70mm, it supports reflow soldering processes. The device operates within a maximum temperature of 85°C and complies with RoHS3 standards.

Feature Summary

• Ultra-compact, thin, and lightweight multilayer ceramic construction
• Designed for automatic placement via standard tape-and-reel packaging
• Requires no tuning adjustments for immediate integration into circuits
• Capable of withstanding standard reflow soldering thermal profiles

Applications

• Bluetooth wireless communication modules
• Wi-Fi enabled devices operating in the 2.4 GHz band
• ZigBee sensor networks and transceivers
• Industrial, Scientific, and Medical (ISM) equipment at 2.45 GHz

Procurement Notes

Verify the specific suffix 'SG9B740' to ensure correct filtering characteristics and packaging type. Confirm moisture sensitivity level (MSL 1) handling requirements if storage conditions exceed manufacturer recommendations. Check for end-of-life status variations across different distributor channels, as some sources indicate potential discontinuation while others list active stock. Ensure compatibility with 0603 footprint designs.

Selection Notes

Select this component when space constraints necessitate a 0603 form factor for 2.45 GHz signal conditioning. The 50 MHz bandwidth provides narrowband filtering suitable for specific protocol implementations like Bluetooth or ZigBee rather than wideband Wi-Fi applications requiring broader spectral coverage. Consider the 1.8 dB insertion loss impact on system link budget during design phase.

Part Context

This part belongs to Murata's LFB series of chip multilayer bandpass filters. These components utilize proprietary ceramic technology to achieve high performance in small packages. The SG series designation typically refers to specific filtering curves optimized for industrial and medical bands. This family replaces larger through-hole or older SMD technologies in modern portable electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Murata's official replacement guide or contact technical support directly for qualified alternatives that match the 0603 footprint and 2.45 GHz specifications.