The DEA162450BT-1271A3 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 1.96 to 3 dB, Rejection 20 to 45.2 dB. Tags: Surface Mount. More details for DEA162450BT-1271A3 can be seen below.