The SF2233E from Murata is a Band Pass Filter with Frequency 1.81 to 1.94 GHz, Bandwidth 65 MHz, Center Frequency 1882.5 MHz, Insertion Loss 1.2 to 2.5 dB, Power 0.015 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for SF2233E can be seen below.