The BFCN-2555 from Mini Circuits is a Band Pass Filter with Frequency 2.5 to 2.61 GHz, Bandwidth 110 MHz, Center Frequency 2555 MHz, Insertion Loss 3.78 to 3.87 dB, Rejection 20 dB @ 1970 and 3200 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BFCN-2555 can be seen below.