The EMA8E1842P75B40D from ECHO Microwave is a Band Pass Filter with Frequency 1.81 to 1.88 GHz, Insertion Loss 1 dB, Rejection 40 dB @ DC to 960 MHz, Return Loss 16 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8E1842P75B40D can be seen below.