The BFCN-5100+ from Mini Circuits is a Band Pass Filter with Frequency 3.1 to 7.1 GHz, Bandwidth 4 GHz, Center Frequency 5.1 GHz, Insertion Loss 1.5 to 2.1 dB, Power 2 W. Tags: Ceramic, Surface Mount, Ceramic Filter. More details for BFCN-5100+ can be seen below.