The EMA8J1780P144F35D from ECHO Microwave is a Band Pass Filter with Frequency 1.71 to 1.85 GHz, Insertion Loss 3 dB, Rejection 35 dB @ 1665MHz, Return Loss 13 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1780P144F35D can be seen below.