The EMA10L1200P100E35D from ECHO Microwave is a Band Pass Filter with Frequency 1.15 to 1.25 GHz, Insertion Loss 2.5 dB, Rejection 35 to 80 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA10L1200P100E35D can be seen below.