The EMA8F422P5G40DL from ECHO Microwave is a Band Pass Filter with Frequency 420 to 425 MHz, Insertion Loss 3.5 dB, Rejection 8.5 to 40 dB, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMA8F422P5G40DL can be seen below.