The SF2166E from Murata is a Band Pass Filter with Frequency 1.24 to 1.32 GHz, Bandwidth 40 MHz, Center Frequency 1280.18 MHz, Insertion Loss 3.2 to 4.5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, Ceramic Filter. More details for SF2166E can be seen below.