The EDA4E1800P220B30 from ECHO Microwave is a Band Pass Filter with Frequency 1.69 to 1.91 GHz, Insertion Loss 1 dB, Rejection 30 to 50 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E1800P220B30 can be seen below.