The SXBP-20R5 from Mini Circuits is a Band Pass Filter with Frequency 20 to 21 MHz, Bandwidth 1 MHz, Center Frequency 20.5 MHz, Insertion Loss 2.2 to 3 dB, Rejection 20 dB @ DC-17 and 27-400 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for SXBP-20R5 can be seen below.