The DEA252450BT-2063C1 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 1.93 to 2.8 dB, Rejection 30 to 47 dB. Tags: Surface Mount. More details for DEA252450BT-2063C1 can be seen below.