The SF2258E from Murata is a Band Pass Filter with Frequency 2.59 to 2.72 GHz, Bandwidth 66 MHz, Center Frequency 2655 MHz, Insertion Loss 2.3 to 3.6 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for SF2258E can be seen below.