The EMA4D3024P100D45B from ECHO Microwave is a Band Pass Filter with Frequency 2.97 to 3.07 GHz, Insertion Loss 1.7 dB, Rejection 45 to 60 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D3024P100D45B can be seen below.