The EDA4D4040P80F45 from ECHO Microwave is a Band Pass Filter with Frequency 4 to 4.08 GHz, Insertion Loss 2.8 dB, Rejection 45 dB @ 3602MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA4D4040P80F45 can be seen below.