The EMA8J1680P90H60D from ECHO Microwave is a Band Pass Filter with Frequency 1.64 to 1.73 GHz, Insertion Loss 4 dB, Rejection 60 dB @ 1580 MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1680P90H60D can be seen below.