The EDA4E3950P300D60 from ECHO Microwave is a Band Pass Filter with Frequency 3.8 to 4.1 GHz, Insertion Loss 2 dB, Rejection 60 dB @ 3360MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E3950P300D60 can be seen below.