Equivalent Circuit Model for Tantalum and Niobium Oxide Capacitors for use in Simulation Software

Equivalent Circuit Model for Tantalum and Niobium Oxide Capacitors for use in Simulation Software
Written By: J. Pelcak

Abstract:
In electrical circuit simulations with simulation software, ideal passive components (resistors, capacitors, inductors) are typically used because real component characteristics have been difficult to model. Unfortunately, ideal and real passive components have significant differences in their electrical behavior. These differences lead to discrepancies between actual hardware performance and expected results based upon simulation software programs. This paper will describe the development of equivalent circuit diagram for modeling real capacitor behavior. Use of this real model in simulation software can help make circuit development more efficient, as the circuits in the simulations should have similar behavior to the actual circuits.

The model presented here includes real component behavior for Tantalum and Niobium Oxide capacitors, with all factors such as ESR and inductance, and even includes the dependence on temperature.

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