The EMA6E2400P20F35D from ECHO Microwave is a Band Pass Filter with Frequency 2.39 to 2.41 GHz, Insertion Loss 3 dB, Rejection 35 dB @ 2310 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA6E2400P20F35D can be seen below.