The 2450BP18C100E from Johanson Technology is a Band Pass Filter with Frequency 2.4 to 2.5 GHz, Bandwidth 100 MHz, Center Frequency 2450 MHz, Insertion Loss 2.5 dB, Rejection 25 to 40 dB. Tags: Surface Mount, Ceramic Filter. More details for 2450BP18C100E can be seen below.