Re: Practical resistor accuracy distribution

On Sat, 27 Apr 2024 00:54:41 +0200, Klaus Vestergaard Kragelund
<klauskvik@hotmail.com> wrote:

Hi
>
I needed to look into distribution of accuracy of resistors.
>
Vendors don't have any info, but luckily some nice people online have
done measurements:
>
<https://www.eevblog.com/forum/projects/smd-resistor-distributions/>
>
<https://lambdafox.com/resistor-tolerances/>
>

The thing to be aware of is that resistor value distributions are
often wildly non-Gaussian.  The classic example is where there are
grades, say 1%, 5%, and 20%.  The 5% group will often have a hole that
happens to match the 1% distribution perfectly.

A lot of modern resistors are made with a relatively wide
distribution, and then machine-sorted into bins.  In this case, many
of the bins will have uniform distributions.  And so on.

Joe Gwinn