The DEA205375BT-2054A1 from TDK is a Band Pass Filter with Frequency 4.9 to 5.85 GHz, Bandwidth 950 MHz, Center Frequency 5.375 GHz, Insertion Loss 1.8 to 2.5 dB, Rejection 19 to 41.5 dB. Tags: Surface Mount. More details for DEA205375BT-2054A1 can be seen below.