The EMA10L1230P130F45D from ECHO Microwave is a Band Pass Filter with Frequency 1.17 to 1.3 GHz, Insertion Loss 3 dB, Rejection 45 dB @ 500 to 1140MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA10L1230P130F45D can be seen below.