The EMA8H2800P200D13D from ECHO Microwave is a Band Pass Filter with Frequency 2.7 to 2.9 GHz, Insertion Loss 1.8 dB, Rejection 13 to 30 dB, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8H2800P200D13D can be seen below.