The SF2204E from Murata is a Band Pass Filter with Frequency 1.86 to 1.94 GHz, Bandwidth 40 MHz, Center Frequency 1900 MHz, Insertion Loss 2.7 to 3.5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, Ceramic Filter. More details for SF2204E can be seen below.