The DEA162450BT-1288B1 from TDK is a Band Pass Filter with Frequency 2.4 to 2.5 GHz, Bandwidth 100 MHz, Center Frequency 2.45 GHz, Insertion Loss 1.03 to 1.6 dB, Rejection 17 to 40 dB. Tags: Surface Mount. More details for DEA162450BT-1288B1 can be seen below.