Searching for low tolerances unpolarized capacitor

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Junus2012

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Hello,

I want to search for an unpolarized 1 µF capacitor with through-hole technology for my wiroboard design. I need to have it will low tolerances of 5% or less.

It will be helpful if you provide me with a tool that shows me this result and so I can use it as well to determine the other component of my circuit

Thank you
Regards
 

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barry said:
Here's a document that discusses capacitance change vs. voltage.
Click to expand...
This is for ceramics, I know they are voltage ciritical, thus I recommended foil capacitors.

****

But even with ceramics .... you don´t need to worry if the capacitor is rated for higher voltage.
Higher voltage rating improves the voltage problem.

The diagram shows that the capacitance varies down to about 30% of the initial value.
But if you use a capacitor with 5 times higher rated voltage it will go down to 80% only.
(raw estimation)

Klaus
 
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Choosing a 5% capacitor may be overkill from the user's perspective and unlikely to know the difference for AC coupling.

There are practical considerations as well as cost, availability, and frequency/temperature, and DC voltage dependence that interferes with the 5% tolerance.
 

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