The SYBP-2640 from Mini Circuits is a Band Pass Filter with Frequency 2.5 to 2.78 GHz, Bandwidth 280 MHz, Center Frequency 2640 MHz, Insertion Loss 2.3 to 2.9 dB, Rejection 20 dB @ DC-1780 and 3800-6040 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for SYBP-2640 can be seen below.