The EMA8H1280P100F40D from ECHO Microwave is a Band Pass Filter with Frequency 1.23 to 1.33 GHz, Insertion Loss 3 dB, Rejection 40 dB @ 1180MHz, Return Loss 20 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8H1280P100F40D can be seen below.