The SF864030B from Filtronetics is a Band Pass Filter with Frequency 862.50 to 865.50 MHz, Center Frequency 864 MHz, Insertion Loss 3.8 to 4.5 dB, Rejection 30 to 42 dB, Upper Rejection 30 to 36 dB. Tags: Surface Mount, RF SAW Filter. More details for SF864030B can be seen below.