The EDA4E2800P200E52 from ECHO Microwave is a Band Pass Filter with Frequency 2.7 to 2.9 GHz, Insertion Loss 2.4 dB, Rejection 50 to 52 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E2800P200E52 can be seen below.