The EDA4F1200P100E20 from ECHO Microwave is a Band Pass Filter with Frequency 1.15 to 1.25 GHz, Insertion Loss 2.5 dB, Rejection 30 to 50 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4F1200P100E20 can be seen below.