The DEA202450BT-2114F1 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 2.5 to 2.8 dB, Rejection 7 to 37 dB. Tags: Surface Mount. More details for DEA202450BT-2114F1 can be seen below.