The CBFU5U51965B from Cernex Inc is a Band Pass Filter with Frequency 540 to 560 MHz, Bandwidth 20 MHz, Insertion Loss 1.9 dB, Upper Rejection 75 dB at 650MHz, Lower Rejection 65 dB at 450MHz. Tags: Tubular Filter. More details for CBFU5U51965B can be seen below.