Re: gEDA-user: bottom side pad only in PCB

["harry eaton" <bumpelo@xxxxxxxxxxx>]

Not impossible, just stand them up a little bit off the board.

----- Original Message -----
From: "Olgierd Eysymontt" <olgierd.eysymontt@xxxxxxxxxxx>
To: <geda-user@xxxxxxxx>
Sent: Tuesday, July 26, 2005 6:27 AM
Subject: Re: gEDA-user: bottom side pad only in PCB


> Harry,
> The problem are not the DIP's but components like electrolytic
> capacitors, relays, DIP sockets or others that cover the pins so it's
> impossible to solder them in the up side.
>
> Thanks,
>
> Olgierd
>
> On Mon, 2005-07-25 at 21:49 -0400, harry eaton wrote:
> > If you make a double-sided board that's not plated through, simply
solder
> > the pins on both sides. You will have to use Z-wires for each via too.
> >
> > h.
> >
> > ----- Original Message -----
> > From: "Olgierd Eysymontt" <olgierd.eysymontt@xxxxxxxxxxx>
> > To: <geda-user@xxxxxxxx>
> > Sent: Monday, July 25, 2005 2:35 PM
> > Subject: Re: gEDA-user: bottom side pad only in PCB
> >
> >
> > > Yes Harry, that's what I do, but sometimes it's not possible to route
on
> > > only one side, so I make double sided boards, and in that cases, I
have
> > > to route by hand the upper side (bacause PCB will try to attach to the
> > > pins thinking I have Plated Trough Holes), anyway it's not a big job
as
> > > PCB do the most on the solder side, but would be nice that PCB could
do
> > > the full job as the toner transfer method is really cheap, fast and
> > > good, I make traces of 10 mils without problems and take no more that
> > > 1-2 hours to have a small board ready (even drilled), so I use it a
lot.
> > >
> > > Thanks
> > >
> > > Olgierd
> > >
> > >
> > >
> > > On Mon, 2005-07-25 at 18:23 -0400, harry eaton wrote:
> > > > The auto router only routes on visible layers. Simply turn off
> > visibility of
> > > > all but the solder layer
> > > > before running the auto-router, and it will only route on the solder
> > layer.
> > > >
> > > > h.
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Olgierd Eysymontt" <olgierd.eysymontt@xxxxxxxxxxx>
> > > > To: <geda-user@xxxxxxxx>
> > > > Sent: Monday, July 25, 2005 7:25 AM
> > > > Subject: Re: gEDA-user: bottom side pad only in PCB
> > > >
> > > >
> > > > > Another case of the no component side pad is when you make boards
at
> > > > > home (with the toner transfer method for example) and don't have
PTH,
> > > > > like most components can't be soldered on top, you have to route
the
> > > > > component side by hand while the solder side is done automatically
by
> > > > > PCB. If there would be an option to avoid the auto router to
connect
> > to
> > > > > the pins in the component layer it would be great and unique.
> > > > >
> > > > > Thanks for such a good software,
> > > > >
> > > > > Olgierd
> > > > > http://www.tea-tec.cl
> > > > >
> > > > > On Sun, 2005-07-24 at 23:47 -0400, Dan McMahill wrote:
> > > > > > Thanks harry!  Both of these suggestions should work fine.
> > > > > >
> > > > > > -Dan
> > > > > >
> > > > > > harry eaton wrote:
> > > > > > > Dan,
> > > > > > >
> > > > > > > Let's start by assuming you can tolerate a tiny annular ring
on
> > the
> > > > top
> > > > > > > side. If so, then make the pins have a miniscule annular ring
and
> > > > place SMD
> > > > > > > pads over them on the back side; use identical pin numbers for
the
> > > > pads and
> > > > > > > pins that are coincident.
> > > > > > >
> > > > > > > If you can't tolerate plated holes, then simply make SMD pads
on
> > the
> > > > back
> > > > > > > side and make pure "mounting" holes for the pins to feed
through.
> > > > > > >
> > > > > > > Either of these is fully supported with the current pcb code.
> > > > Eventually we
> > > > > > > could have the pin annular ring have per-layer size.
> > > > > > >
> > > > > > > h.
> > > > > > >
> > > > > > > ----- Original Message -----
> > > > > > > From: "Dan McMahill" <dan@xxxxxxxxxxxx>
> > > > > > > To: <geda-user@xxxxxxxx>
> > > > > > > Sent: Sunday, July 24, 2005 10:17 PM
> > > > > > > Subject: gEDA-user: bottom side pad only in PCB
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >>anyone ever have to deal with a part which is leaded but only
> > wants a
> > > > > > >>solderside pad in PCB?  I think it just doesn't do it
currently.
> > > > Anyone
> > > > > > >>have a workaround until I can get time to fix this?
> > > > > > >>
> > > > > > >>Thanks
> > > > > > >>-Dan
> > > > > > >>
> > > > > > >>p.s.  Think metal package parts...
> > > > > >
> > > > >
> > > > >
> > > > >
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> > >
> > >
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