The EDA4E4287P425E45 from ECHO Microwave is a Band Pass Filter with Frequency 4.08 to 4.5 GHz, Insertion Loss 2.5 dB, Rejection 45 to 50 dB, Return Loss 16 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E4287P425E45 can be seen below.