The EMA8F1030P9K25D from ECHO Microwave is a Band Pass Filter with Frequency 1.02 to 1.03 GHz, Insertion Loss 5.5 dB, Rejection 25 to 26 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F1030P9K25D can be seen below.