The EDA4E5250P500C40 from ECHO Microwave is a Band Pass Filter with Frequency 5 to 5.5 GHz, Insertion Loss 1.5 dB, Rejection 40 dB @ 4500MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E5250P500C40 can be seen below.