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Choosing, using bypass capacitors (2)

Posted: 21 Jun 2007     Print Version  Bookmark and Share

Keywords:bypass capacitors  sizing  parasitics 

This is the second instalment of a three-part series on bypass capacitors. The first article discusses how the materials and structure of a capacitor dictates its attributes, like parasitics, temperature stability, maximum voltage, linearity, cost and size. This part talks about sizing bypass capacitors.

Bypass capacitors are usually sized by convention or typical values. For example, common values are 1µF and 0.1µF. In the simplest terms, the larger value handles the lower frequencies and high-current issues while the smaller value handles higher frequencies. The need for multiple capacitors comes from the parasitics associated with real capacitors.

View the PDF document for more information.

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