The RF3181E from Murata is a Band Pass Filter with Frequency 916 to 917 MHz, Bandwidth 0.5 MHz, Center Frequency 916.5 MHz, Insertion Loss 2.7 to 4 dB, Power 0.025 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for RF3181E can be seen below.