The EDA4F1227P5G30 from ECHO Microwave is a Band Pass Filter with Frequency 1.22 to 1.23 GHz, Insertion Loss 3.5 dB, Rejection 30 to 65 dB, Return Loss 18 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4F1227P5G30 can be seen below.