The EMA8F1675P20G30B from ECHO Microwave is a Band Pass Filter with Frequency 1.67 to 1.68 GHz, Insertion Loss 3.2 dB, Rejection 30 dB @1640MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F1675P20G30B can be seen below.