Parasitic inductance of passive components (LSER)

I did not implement Lser for capacitors because it usually caused more harm than good.

A series inductance is not a great way to model the internal inductance of a capacitor. For foil capacitors, you really need a ladder of series R & L driving a distributed capacitance, though I’ve been able to match the complex impedance within a few degrees over several decades of frequency with just two lumps.

For ceramic capacitors, modeling their internal inductance is not really meaningful without modeling the parasitics of the PCB.

Anyway, when I watch people using Lser, it only increases simulation times without actually improving the integrity of the simulation.

Your mileage will vary,


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