The EDA4F2011P250E30 from ECHO Microwave is a Band Pass Filter with Frequency 1.89 to 2.14 GHz, Insertion Loss 2.5 dB, Rejection 10 to 50 dB, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4F2011P250E30 can be seen below.