The EDA4H2900P400D40 from ECHO Microwave is a Band Pass Filter with Frequency 2.7 to 3.1 GHz, Insertion Loss 2 dB, Rejection 40 dB @ 2500MHz, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4H2900P400D40 can be seen below.