The EMA8J1732P45E20D from ECHO Microwave is a Band Pass Filter with Frequency 1.71 to 1.76 GHz, Insertion Loss 2.5 dB, Rejection 15 to 35 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1732P45E20D can be seen below.