LFD21433MMF5E258

RF Multiplexers Overview

The LFD21433MMF5E258 is an integrated RF front-end module designed for sub-1 GHz ISM band applications, specifically targeting the 433 MHz frequency range. It is engineered as a companion component for Silicon Labs EFR32 Series 1 Wireless System-on-Chips (SoCs). The device integrates passive components to optimize impedance matching and signal integrity within compact wireless transceiver designs.

RF Multiplexers Feature Summary

• Integrated RF solution tailored for sub-1 GHz ISM bands
• Optimized compatibility with EFR32 Series 1 Wireless SoCs
• Compact surface-mount design facilitating space-constrained layouts

RF Multiplexers Applications

• Wireless sensor networks operating in the 433 MHz ISM band
• Remote control systems utilizing EFR32 Series 1 transceivers
• Industrial telemetry and monitoring devices requiring sub-1 GHz connectivity

RF Multiplexers Procurement Notes

Verify current lifecycle status prior to procurement, as this component is designated as End of Life and scheduled for obsolescence by the manufacturer. Confirm that the specific package type and pin configuration align with existing PCB footprints. Ensure that the intended application relies on the EFR32 Series 1 architecture, as the integration is specific to this silicon family. Request updated availability information from authorized distributors to assess supply continuity risks associated with discontinued parts.

RF Multiplexers Selection Notes

Select this component only when designing around Silicon Labs EFR32 Series 1 Wireless SoCs, as it provides pre-tuned matching for these specific architectures. Evaluate the physical size constraints against the SMD package dimensions to ensure adequate board real estate. Consider the operational frequency requirements strictly within the 433 MHz ISM band. Assess long-term supply chain stability given the end-of-life status before committing to mass production volumes.

RF Multiplexers Part Context

This part belongs to Murata’s portfolio of integrated passive devices (IPDs) and RF front-end solutions. It serves as a specialized matching network component rather than a standalone active radio chip. The product line focuses on simplifying RF design for IoT and wireless communication modules by integrating discrete passive elements into a single reliable package.

RF Multiplexers Replacement Considerations

No public confirmed substitute part numbers are available. Due to the End of Life status and specific integration with EFR32 Series 1 SoCs, direct replacements may require redesigning the RF matching network or migrating to newer SoC generations.