The EDA4E1653P20D45 from ECHO Microwave is a Band Pass Filter with Frequency 1.64 to 1.66 GHz, Insertion Loss 2 dB, Rejection 45 to 50 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E1653P20D45 can be seen below.