The DEA205425BT-2190E1 from TDK is a Band Pass Filter with Frequency 4.92 to 5.95 GHz, Bandwidth 1030 MHz, Center Frequency 5.435 GHz, Insertion Loss 0.81 to 1 dB, Rejection 26 to 35.3 dB. Tags: Surface Mount. More details for DEA205425BT-2190E1 can be seen below.