The EMA8J2412P24E50D from ECHO Microwave is a Band Pass Filter with Frequency 2.4 to 2.42 GHz, Insertion Loss 2.5 dB, Rejection 50 dB @ 2475 to 2485MHz, Return Loss 12 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8J2412P24E50D can be seen below.