The EMA6E2030P15F40D from ECHO Microwave is a Band Pass Filter with Frequency 2.02 to 2.04 GHz, Insertion Loss 3 dB, Rejection 40 dB @ 1930 MHz, Return Loss 15 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA6E2030P15F40D can be seen below.