The AEQ05471 from Knowles is a Gain Equalizer with Frequency DC to 18 GHz, Gain Equalization 3 dB, Insertion Loss 0.25 dB, Impedance 50 Ohms, Operating Temperature -55 to 125 Degree C. Tags: Surface Mount, Positive Gain Slope. More details for AEQ05471 can be seen below.