The EMA4D1080P80F25D from ECHO Microwave is a Band Pass Filter with Frequency 1.04 to 1.12 GHz, Insertion Loss 3 dB, Rejection 25 dB @ 1000 MHz, Return Loss 10 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA4D1080P80F25D can be seen below.