The EMEA6F742P27C50A from ECHO Microwave is a Band Pass Filter with Frequency 729 to 756 MHz, Insertion Loss 1.5 dB, Rejection 50 dB @ 642.5MHz, Return Loss 14 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for EMEA6F742P27C50A can be seen below.