[sdiy] Trace width and via diameter/hole size

[James Patchell]

The place I use would probably not be cost effective for you...but here in 
the US...I use Advanced Circuits...there are dozens of other places that 
give similar deals...but from advanced circuits...I can get three Vocal 
Filter Boards made for a total of $114 US (thats $33 each + $15 
shipping)...Several years ago I had a run of 25 made which cut the cost 
down a bit...by the way...there are only two boards left...since this board 
uses 9 of the CA3280Es....I will not be making any more boards....


At 12:35 PM 9/10/2005 +0200, Philippe Derenne wrote:
>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
> >

         -Jim
***************************************************************
http://www.oldcrows.net/~patchell

***************************************************************