The EMA4D1575P02B35B from ECHO Microwave is a Band Pass Filter with Frequency 1.57 to 1.58 GHz, Insertion Loss 1.3 dB, Rejection 35 to 40 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D1575P02B35B can be seen below.