The EDA3E4187P125K60 from ECHO Microwave is a Band Pass Filter with Frequency 4.13 to 4.25 GHz, Insertion Loss 5.5 dB, Rejection 60 dB @ 3750 to 3875MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA3E4187P125K60 can be seen below.