The EMA3C2167P155E20B from ECHO Microwave is a Band Pass Filter with Frequency 2.09 to 2.25 GHz, Insertion Loss 2.5 dB, Rejection 20 to 25 dB, Return Loss 10 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA3C2167P155E20B can be seen below.