The SF2177E-1 from Murata is a Band Pass Filter with Frequency 1.43 to 1.51 GHz, Bandwidth 40 MHz, Center Frequency 1472 MHz, Insertion Loss 3.3 to 4.5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for SF2177E-1 can be seen below.