The EDA4E4500P40D from ECHO Microwave is a Band Pass Filter with Frequency 4.48 to 4.52 GHz, Insertion Loss 2 dB, Rejection 40 dB @ 4150 & 4850MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E4500P40D can be seen below.