The EDA4F2800P20F60 from ECHO Microwave is a Band Pass Filter with Frequency 2.79 to 2.81 GHz, Insertion Loss 3 dB, Rejection 60 dB @ 2520MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4F2800P20F60 can be seen below.