The BFCN-5151+ from Mini Circuits is a Band Pass Filter with Frequency 4120 to 6440 MHz, Center Frequency 5151 MHz, Insertion Loss 1.2 to 3 dB, Upper Rejection 15 to 32 dB, Lower Rejection 20 to 24 dB. Tags: Ceramic, Ceramic Filter. More details for BFCN-5151+ can be seen below.