The EMA8F1842P75F22D from ECHO Microwave is a Band Pass Filter with Frequency 1.81 to 1.88 GHz, Insertion Loss 3 dB, Rejection 22 dB @ 1785MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F1842P75F22D can be seen below.