The DEA202450BT-3030A1 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 to 1.5 dB, Rejection 5 to 41 dB. Tags: Surface Mount. More details for DEA202450BT-3030A1 can be seen below.