The EMA8J1307P75C27D from ECHO Microwave is a Band Pass Filter with Frequency 1.27 to 1.35 GHz, Insertion Loss 1.2 dB, Rejection 27 to 39 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1307P75C27D can be seen below.