The EMA8H2680P20E50D from ECHO Microwave is a Band Pass Filter with Frequency 2.67 to 2.69 GHz, Insertion Loss 2.5 dB, Rejection 50 dB @ 2615 MHz, Return Loss 13 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8H2680P20E50D can be seen below.