The SF2250E from Murata is a Band Pass Filter with Frequency 1.6 to 1.64 GHz, Bandwidth 20 MHz, Center Frequency 1615 MHz, Insertion Loss 3.4 to 4.6 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for SF2250E can be seen below.