The EDA4F4400P220F50 from ECHO Microwave is a Band Pass Filter with Frequency 4.29 to 4.51 GHz, Insertion Loss 3 dB, Rejection 50 dB @ 4000MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4F4400P220F50 can be seen below.