The EMA3B2385P10D20D from ECHO Microwave is a Band Pass Filter with Frequency 2.38 to 2.39 GHz, Insertion Loss 2 dB, Rejection 18 to 20 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA3B2385P10D20D can be seen below.