The SF2124E from Murata is a Band Pass Filter with Frequency 2.36 to 2.53 GHz, Bandwidth 83.5 MHz, Center Frequency 2441.8 MHz, Insertion Loss 2.1 to 3.2 dB, Power 0.1 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter. More details for SF2124E can be seen below.