The SF2257A from Murata is a Band Pass Filter with Frequency 69.2 to 70.8 MHz, Bandwidth 0.8 MHz, Center Frequency 70 MHz, Insertion Loss 9.2 to 11 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, IF SAW Filter, Ceramic Filter. More details for SF2257A can be seen below.