The DEA202450BT-1213C1 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 1.13 to 1.8 dB, Rejection 10 to 45.8 dB. Tags: Surface Mount. More details for DEA202450BT-1213C1 can be seen below.