The TSB1N18D845MLV0D9T from TAIYO YUDEN (U.S.A.) Inc is a Band Pass Filter with Frequency 729 to 960 MHz, Bandwidth 231 MHz, Center Frequency 844.5 MHz, Insertion Loss 1.34 to 2 dB, Rejection 3 to 50.1 dB. Tags: Surface Mount, Ceramic Filter. More details for TSB1N18D845MLV0D9T can be seen below.