The EDA4L2833P40O85R from ECHO Microwave is a Band Pass Filter with Frequency 2.81 to 2.85 GHz, Insertion Loss 7.5 dB, Rejection 5 to 85 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4L2833P40O85R can be seen below.