[PEDA] imperial or metric, mounting without pads

[Peter Bennett]

Bevan Weiss wrote:

> If components must be mounted on the PCB with screws, then use pads.
> Pads have holes, screws require holes, therefore screws may require
> pads. Pads are the best option to use, they can have zero annular ring,
> be marked as unplated and untented.
> 
> If you only need holes then just set the pad size to 0. Have the hole
> size as necessary.

I prefer to set the pad size for mounting holes to match the diameter of the
screw head or other hardware - this ensures that I can't put a track under the
screw head, where it might get damaged, or shorted to ground. (And, with a pad
size of zero, Protel may allow you to place a track _across_ the hole, which
wouldn't be good...)


-- 
Peter Bennett
TRIUMF
4004 Wesbrook Mall, Vancouver, BC, Canada V6T 2A3
Phone: 604-222-7456