The 2450BP41D100B from Johanson Technology is a Band Pass Filter with Frequency 2.4 to 2.5 GHz, Bandwidth 100 MHz, Insertion Loss 2.0 dB, Rejection 30 dB, Power 0.5 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for 2450BP41D100B can be seen below.