The EMA4D1475P100D40B from ECHO Microwave is a Band Pass Filter with Frequency 1.43 to 1.53 GHz, Insertion Loss 2 dB, Rejection 40 dB @ 1175MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D1475P100D40B can be seen below.