The SF2186E from Murata is a Band Pass Filter with Frequency 1.25 to 1.29 GHz, Bandwidth 20.46 MHz, Center Frequency 1268.52 MHz, Insertion Loss 1.7 to 3.2 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for SF2186E can be seen below.