13 lines
743 B
Markdown
13 lines
743 B
Markdown
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Passive components are commonly made with E-series values appropriate to their precision.
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Capacitors commonly use E12 values. 10% and 5% resistors commonly use E24 values. 1%
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resistors use E96 values. Other series are not commonly used.
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To select a value begin with the calculated target value and then round it to 2
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significant figures for E24 or below or 3 significant figures for E48 and up.
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Then find the value in the table which is nearest to the significant figures
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remaining and substitute it for those figures.
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For example if the calculated target value is 16,834.2Ω then this rounds to 16,800Ω.
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The nearest value to 168 is 169 and the selected E96 value is 16.9kΩ.
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The value 0 is a special case and is not present in any series.
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