The EMEA8F1720P20C50A from ECHO Microwave is a Band Pass Filter with Frequency 1.71 to 1.73 GHz, Insertion Loss 1.5 dB, Rejection 50 dB @ 1620MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMEA8F1720P20C50A can be seen below.