HDI Circuit Board Layout Cloning

Digital circuits often require discontinuous currents, so inrush currents are generated for some HDI Circuit Board Layout cloning. If the power trace is very long, the presence of inrush current will cause high-frequency noise which can be effectively reduced through circuit board reverse engineering, and this high-frequency noise will be introduced into other signals.

In high-speed circuit board’s layout diagram reverse engineering, there will inevitably be parasitic inductance, parasitic resistance, and parasitic capacitance, so the high-frequency noise will eventually be coupled to other circuits.

The existence of parasitic inductance will also lead to a decrease in the ability of the trace from HDI PCB Board Layout cloning to withstand the maximum surge current, which in turn will cause a partial voltage drop, which may disable the circuit.

Therefore, it is particularly important to add a bypass capacitor in front of the digital device. The larger the capacitance, the transmission energy is limited by the transmission rate, so a large capacitance and a small capacitance are generally combined to meet the full frequency range.