The EMA8F950P20E50D from ECHO Microwave is a Band Pass Filter with Frequency 945 to 955 MHz, Insertion Loss 2.5 dB, Rejection 50 dB @ 790 to 910 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F950P20E50D can be seen below.