The EDA4E2680P28K30 from ECHO Microwave is a Band Pass Filter with Frequency 2.67 to 2.69 GHz, Insertion Loss 5.5 dB, Rejection 30 to 80 dB, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E2680P28K30 can be seen below.