The DEA204480BT-3019B2 from TDK is a Band Pass Filter with Frequency 4.2 to 4.76 GHz, Bandwidth 560 MHz, Center Frequency 4.48 GHz, Insertion Loss 2.52 to 3.6 dB, Rejection 18 to 63.1 dB. Tags: Surface Mount. More details for DEA204480BT-3019B2 can be seen below.