Re: [sdiy] Trace width and via diameter/hole size

[Roman]

1A thru 12mils track? That's scarry. It may get hot.
For that current I'd rather choose 100mils minimum.

Handling close to 1A can also mean that the track will
not burn at this current.

With trace widths you describe, I'd assume you work with 0402, TSSOP, QFN or even BGA.

Roman

---- Wiadomość Oryginalna ----
Od: Bert Schiettecatte <bert at percussa.com>
Do: 'harrybissell' <harrybissell at prodigy.net>
Kopia do: synth-diy at dropmix.xs4all.nl
Data: Thu, 8 Sep 2005 09:42:33 +0200
Temat: RE: [sdiy] Trace width and via diameter/hole size

> Hi Harry,
> 
> > If you have special needs, contact me offlist.  For the most 
> > part, power traces for s-diy can be .040 - .050" with no 
> > measurable temperature rise.  I use .020 - .025" for signals. 
> >  I nick down to .015 to go between resistors or IC pins.
> 
> I'm using approx. 12 mils for power traces and 8 mils for 
> signals. According to the ULP's in eagle the 12 mil trace 
> Should be able to handle close to 1A? Is my 12 mils for 
> Power to narrow? The highest current in the system will 
> Be around 890mA. 
> 
> > Vias usually have better current carrying capacity than runs. 
> > The whole inner barrel is copper plated.
> 
> Mm... The pcb fab I'm using in Belgium seemed to have a choice
> Between filling vias and not filling them.. So I should ask 
> Them to fill them? Last time my board arrived it didn't have 
> The vias filled. 
> 
> Thanks !
> bert
> 
>