Proper decoupling capacitor practices, and why you should leave 100nF behind

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Current discussions in the electronics design community suggest revisiting decoupling capacitor choices, particularly the use of 100nF capacitors. While traditional wisdom favors these smaller capacitors, there's a shift towards larger values, like 1uF or 2.2uF, especially in high-speed designs. Key points from the discussions highlight the importance of capacitor placement, capacitance value relative to IC speeds, and the negative impacts of larger physical capacitors on high-frequency performance. Additionally, users stress the significance of having multiple smaller capacitors in proximity to active components rather than concentrating capacitance in a few larger components. Understanding how capacitance behaves under different conditions, particularly in voltage stress, has also emerged as critical knowledge for designers.
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