The EDA4E1880P28K30 from ECHO Microwave is a Band Pass Filter with Frequency 1.87 to 1.89 GHz, Insertion Loss 5.5 dB, Rejection 30 to 80 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E1880P28K30 can be seen below.