The B033ND5S from Knowles is a Band Pass Filter with Frequency 3.1 to 3.5 GHz, Bandwidth 400 MHz, Center Frequency 3500 MHz, Insertion Loss 2.0 to 3.2 dB, Rejection DC to 2.6 GHz (30 dB), 4 to 6 GHz (40 dB). Tags: PCB Mount, Ceramic, Ceramic Filter. More details for B033ND5S can be seen below.