The EDA3C3090P31L40T from ECHO Microwave is a Band Pass Filter with Frequency 3.07 to 3.11 GHz, Insertion Loss 5.9 dB, Rejection 40 dB @ 2880 MHz, Return Loss 9.5 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EDA3C3090P31L40T can be seen below.