The EDA4E4150P100H50 from ECHO Microwave is a Band Pass Filter with Frequency 4.1 to 4.2 GHz, Insertion Loss 4 dB, Rejection 50 dB @ 4400MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4E4150P100H50 can be seen below.