The EMA8H1030P20F30D from ECHO Microwave is a Band Pass Filter with Frequency 1.02 to 1.04 GHz, Insertion Loss 3 dB, Rejection 30 to 60 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8H1030P20F30D can be seen below.