The EMA3B1575P4D15B from ECHO Microwave is a Band Pass Filter with Frequency 1.57 to 1.58 GHz, Insertion Loss 2 dB, Rejection 15 to 20 dB, Return Loss 13 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA3B1575P4D15B can be seen below.