The BFCW-542 from Mini Circuits is a Band Pass Filter with Frequency 4.7 to 6 GHz, Center Frequency 5350 MHz, Insertion Loss 1.3 to 1.8 dB, Rejection 26 to 34 dB, Upper Rejection 26 to 34 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BFCW-542 can be seen below.