The EMA4D2600P300D35D from ECHO Microwave is a Band Pass Filter with Frequency 2.45 to 2.75 GHz, Insertion Loss 2 dB, Rejection 35 to 40 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D2600P300D35D can be seen below.