[sdiy] Trace width and via diameter/hole size

[Philippe Derenne]

Hi Bert,

I make my own PCBs, even 2-side (without metalized vias...) but when I'm
looking to James's vocal filter design, I think that's not possible to make
such a PCB on my own.
Which fab do you use ? Do they make a single print, and is this not too
expensive ?

Phil.
----- Original Message -----
From: "Bert Schiettecatte" <bert at percussa.com>
To: "'harrybissell'" <harrybissell at prodigy.net>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, September 08, 2005 9:42 AM
Subject: 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
>