The EMA8J2725P20D60D from ECHO Microwave is a Band Pass Filter with Frequency 2.72 to 2.74 GHz, Insertion Loss 2 dB, Rejection 60 dB @ 2575MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J2725P20D60D can be seen below.