The EDA3F3900P600D35 from ECHO Microwave is a Band Pass Filter with Frequency 3.6 to 4.2 GHz, Insertion Loss 2 dB, Rejection 35 to 40 dB, Return Loss 10 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA3F3900P600D35 can be seen below.