The TFS1245A from Vectron International is a Band Pass Filter with Frequency 1237 to 1254 MHz, Insertion Loss 1.5 to 3 dB, Rejection 32 to 40 dB, Upper Rejection 35 to 40 dB, Lower Rejection 32 to 35 dB. Tags: Surface Mount, RF SAW Filter. More details for TFS1245A can be seen below.