The EMA8J1188P104H28D from ECHO Microwave is a Band Pass Filter with Frequency 1.14 to 1.24 GHz, Insertion Loss 4 dB, Rejection 28 to 50 dB, Return Loss 13 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1188P104H28D can be seen below.