The DEA165375BT-2122A1 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 1.1 to 2 dB, Rejection 10 to 54 dB. Tags: Surface Mount. More details for DEA165375BT-2122A1 can be seen below.