The EMA8G1800P400B50D from ECHO Microwave is a Band Pass Filter with Frequency 1.6 to 2 GHz, Insertion Loss 0.8 dB, Rejection 50 to 60 dB, Return Loss 13 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8G1800P400B50D can be seen below.