The EDA4E4500P100H70 from ECHO Microwave is a Band Pass Filter with Frequency 4.45 to 4.55 GHz, Insertion Loss 4 dB, Rejection 70 dB @ 4000MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E4500P100H70 can be seen below.