The EMA8D1232P156B40D from ECHO Microwave is a Band Pass Filter with Frequency 1.15 to 1.31 GHz, Insertion Loss 1 dB, Rejection 40 dB @ DC to 950 MHz, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8D1232P156B40D can be seen below.