The EMA8H2185P20E50D from ECHO Microwave is a Band Pass Filter with Frequency 2.18 to 2.2 GHz, Insertion Loss 2.5 dB, Rejection 50 to 60 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8H2185P20E50D can be seen below.