The EDA4F4300P2J50L from ECHO Microwave is a Band Pass Filter with Frequency 4.3 to 4.3 GHz, Insertion Loss 5 dB, Rejection 50 dB @ DC to 4020MHz, Return Loss 20 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4F4300P2J50L can be seen below.