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ensure that where there is inductance, there will also be capacitance. Component designers will strive to minimise parasitic elements but are unable to eliminate them. Discrete components will often have some parasitic values detailed on their datasheets to aid circuit designers in compensating for
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The most commonly seen manifestations of parasitic impedances in components are in the parasitic inductance and resistance of the component leads and the parasitic capacitance of the component packaging. For wound components such as
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in one particular place. Designers sometimes take advantage of parasitic effects to achieve a desired function in a component, see for instance
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in equivalent circuits, but this is not always adequate. For instance, the inter-winding capacitance mentioned above is really a
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that vary with frequency or voltage and cannot be adequately modelled by linear lumped or distributed components.
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Parasitic impedances are unavoidable. All conductors possess resistance and inductance and the principles of
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which belong to two or more intended devices or functions. The parasitic effects in the
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Nonlinear parasitic elements can also arise. The term is commonly used to describe
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at which point (and all frequencies above) the component is useless as an inductor.
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Undesired resistance, inductance, or capacitance within electrical components
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is designed to possess resistance, but will also possess unwanted
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Parasitic elements of a typical electronic component package.
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whereby an unwanted semiconductor device is formed from
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198:along the whole length of the winding and not a
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64:but its sources remain unclear because it lacks
248:Circuits, signals, and systems for bioengineers
265:, pp. 13–14, John Wiley and Sons, 2009
190:Parasitic impedances are often modelled as
143:for its intended purpose. For instance, a
250:, pp. 134–135, Academic Press, 2005
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263:ESD: Failure Mechanisms and Models
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183:at some frequency, known as the
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30:For the antenna element, see
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233:in inductors also include
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185:self-resonant frequency,
50:This article includes a
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173:parasitic capacitance
149:parasitic capacitance
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215:parasitic structures
141:electrical component
261:Steven H. Voldman,
196:distributed element
121:parasitic impedance
117:electrical networks
235:non-linear effects
229:of capacitors and
219:integrated circuit
159:unwanted effects.
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52:list of references
287:Electronic design
246:John L. Semmlow,
208:analog delay line
204:helical resonator
192:lumped components
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32:parasitic element
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