日本語
I've been looking at designing a board that may need to use 2oz/70um copper for current-carrying capacity.
I have seen mentioned that when using 2oz copper, your minimum trace width and spacing must be larger compared to regular 1oz. Why is this?
And if so, what value would people recommend for minimum trace/space for 2oz? I usually go with 12 mil width and 10 mil clearance. Should I increase either?
- Comments(1)
A****min
Jul 09.2019, 17:29:57
Minimum trace width and spacing must be several times the copper thickness, except for a few very special processes . This doesn't usually affect 2oz proto boards (7/7 rule is usually acceptable). 3oz+ may need wider rules.
If you need finer, I've seen 4/4 available for 2oz, but you'll pay more for it (whether because of poor yields from a cheap source, or good yields from an expensive source).
