The AEQ3042 from Knowles is a Gain Equalizer with Frequency DC to 7 GHz, Gain Equalization 0.6 dB, Insertion Loss 0.8 dB, Impedance 50 Ohms, Operating Temperature -55 to 125 Degree C. Tags: Surface Mount, Positive Gain Slope. More details for AEQ3042 can be seen below.