The EMA8F2725P20C32C from ECHO Microwave is a Band Pass Filter with Frequency 2.72 to 2.74 GHz, Insertion Loss 1.5 dB, Rejection 32 to 42 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F2725P20C32C can be seen below.