About converting pad corner radius from percentage into mm or inch

[mulfycrowh]

Hi.

The pad corner radius is given by Altium in %.
The datasheets give it in mm or inch.
How would it be possible to make the conversion?
Thanks

[mulfycrowh]

I found the answer:
The value in Altium is a percentage of half of the shortest side of the pad. As such, a value of 0% corresponds to a rectangular pad, and 100% to a circular pad.
So for example, if the shortest side of the pad is 0.3 mm and you want a corner radius of 0.05 mm, please divide 0.05 by 0.15 giving 30%.
That's all folks!

[WhoKnewKnows]

Glad you figured it out.

Something I've done in the past to figure things out is to create test cases and then use Altium Designer's measurement tools to see if I can figure out what it's doing, or what it's supposed to be doing 😉