The EDA3D3912P425E40 from ECHO Microwave is a Band Pass Filter with Frequency 3.7 to 4.13 GHz, Insertion Loss 2.5 dB, Rejection 40 dB @ 2855 MHz, Return Loss 16 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA3D3912P425E40 can be seen below.