The EMA3C2150P221D15A from ECHO Microwave is a Band Pass Filter with Frequency 2.04 to 2.26 GHz, Insertion Loss 2 dB, Rejection 15 to 25 dB, Return Loss 10 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA3C2150P221D15A can be seen below.