The EMA8F1230P130C40DL from ECHO Microwave is a Band Pass Filter with Frequency 1.17 to 1.3 GHz, Insertion Loss 1.2 dB, Rejection 40 dB @ DC to 1000 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F1230P130C40DL can be seen below.