The EMA8J1536P50H40D from ECHO Microwave is a Band Pass Filter with Frequency 1.51 to 1.56 GHz, Insertion Loss 3.8 dB, Rejection 40 dB @ 1491MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1536P50H40D can be seen below.