The CBF01014345B from Cernex Inc is a Band Pass Filter with Frequency 1.22 to 1.24 GHz, Bandwidth 22 MHz, Insertion Loss 4.3 dB, Upper Rejection 45 dB at 1.27GHz, Lower Rejection 55 dB at 1.19GHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for CBF01014345B can be seen below.