The 2593BP44B186 from Johanson Technology is a Band Pass Filter with Frequency 2.5 to 2.69 GHz, Bandwidth 186 MHz, Insertion Loss 1.2 dB, Rejection 40 dB, Power 0.5 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for 2593BP44B186 can be seen below.