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25LC128
SI4431-B (2)SI4431 (7)SI443 (32)SI44 (166)SI4 (1072)
Silicon Labs

SI4431-B1-FM

IC RF TxRx Only General ISM < 1GHz 240MHz ~ 930MHz 20-VFQFN Exposed Pad
Silicon Labs

SI4431-B1-FMR

IC RF TxRx Only General ISM < 1GHz 240MHz ~ 930MHz 20-VFQFN Exposed Pad
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