The SF1219E-1 from Murata is a Band Pass Filter with Frequency 2.33 to 2.35 GHz, Bandwidth 12.5 MHz, Center Frequency 2338.75 MHz, Insertion Loss 2.1 to 3 dB, Operating_Temperature -40 to 105 Degree C. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for SF1219E-1 can be seen below.