The BPF-C45 from Mini Circuits is a Band Pass Filter with Frequency 30 to 70 MHz, Bandwidth 40 MHz, Center Frequency 45 MHz, Insertion Loss 0.60 to 0.67 dB, Rejection 20 dB @ 23 and 95 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BPF-C45 can be seen below.