The EDA4E3300P400C30 from ECHO Microwave is a Band Pass Filter with Frequency 3.1 to 3.5 GHz, Insertion Loss 1.5 dB, Rejection 30 to 50 dB, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E3300P400C30 can be seen below.