The EMA8J1860P40F50D from ECHO Microwave is a Band Pass Filter with Frequency 1.84 to 1.88 GHz, Insertion Loss 3 dB, Rejection 50 dB @ 1810 MHz, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J1860P40F50D can be seen below.