All Applications  / All Capacitors  / Aluminium Capacitors  / Basic Concepts Capacitors  / Capacitors  / Ceramic Capacitors  / Coupling & Decoupling  / e-PassiveBlog  / editors choice  / Filters  / Power Conversion  / Tantalum Capacitors  / Technology

Why low ESR matters in capacitor design

By Capacitor Faks and EPCI Posted On 11.2.2019

Source: Capacitor Faks blog, EPCI

by Anthony Kenny (Capacitor Faks) and Tomas Zednicek (EPCI). A practical capacitor is a non-ideal component. Its circuit model contains series inductance (ESL) and series resistance (ESR). Although equivalent series resistance is often shown in circuit models as a constant value, it varies depending on operating conditions. ESR is resistance from a combination of energy loss mechanisms under specific operating conditions. (more…)