The EDA4D4425P90D20 from ECHO Microwave is a Band Pass Filter with Frequency 4.38 to 4.47 GHz, Insertion Loss 2 dB, Rejection 20 to 40 dB, Return Loss 16 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4D4425P90D20 can be seen below.