The EMA8J1747P75F60D from ECHO Microwave is a Band Pass Filter with Frequency 1.71 to 1.79 GHz, Insertion Loss 3 dB, Rejection 60 dB @ 1805 to 1880 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1747P75F60D can be seen below.