The EDA4E2800P250D40 from ECHO Microwave is a Band Pass Filter with Frequency 2.68 to 2.93 GHz, Insertion Loss 2 dB, Rejection 40 dB @ 2350MHz, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E2800P250D40 can be seen below.