Re: What is the Best PCB Layout software ? (Money no object)

From: Ralph Malph (noone_at_yahoo.com)
Date: 01/13/04 

Date: Mon, 12 Jan 2004 23:48:21 -0500

Ian McBride wrote:
>
> "Ralph Malph" <noone@yahoo.com> wrote in message
> news:40036859.F8EA05E7@yahoo.com...
>
> > One thing it can't do (without screwing up the DRC) is holes in a PAD.
> > I am using a small regulator that requires heat spreaders on the top and
> > bottom of the board connected by vias directly under the thermal pad on
> > the bottom of the package. I know this is not normal, but TI recommends
> > it. I was never able to get rid of the DRC errors this produced.
>
> If this is the package I remember, you can make the thermal pad a small pad
> with THERMAL=OFF inside a rectangle on the top layer. A pain, but no DRC
> complaints.

I am not trying to make a thermal. I am trying to make a fairly large
rectangular pad with six holes (vias) in it. The entire rectangle needs
to have the solder mask removed from it. I guess I could have split the
pad up into six equal, rectangular areas as pads. But they should be
touching and I don't think I can get this past the DRC either unless I
allow everything to touch. I believe I have object spacing set for 10
mil at the moment.

Or could I use a polygon to open up an area in the solder mask? I did
not try much in that area.

Relevant Pages

  • Re: What is the Best PCB Layout software ? (Money no object)
    ... >> pad up into six equal, ... >> Or could I use a polygon to open up an area in the solder mask? ... I can draw a rectangle on the tStop layer to ... there are still four more vias that are outside this pad area ...
    (comp.arch.embedded)
  • Wacom Tablet Absolute Mode
    ... I've got a Wacom Graphire graphics tablet which I'm using on Gentoo ... screen and find it hits the 'wall' before the bottom. ... top of screen and it hits the top before hitting top of pad. ... pjf at cmp dot liv dot ack dot ook ...
    (comp.os.linux.x)
  • Re: Mouse Jumping around??
    ... mean it jumps from say the bottom right to the top left or elsewhere. ... decorated, very large, very soft, MOUSE PAD... ... To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx with a subject of "unsubscribe". ...
    (Debian-User)
  • Re: Mouse Jumping around??
    ... mean it jumps from say the bottom right to the top left or elsewhere. ... decorated, very large, very soft, MOUSE PAD... ... To UNSUBSCRIBE, email to debian-user-REQUEST@xxxxxxxxxxxxxxxx ...
    (Debian-User)
  • Re: What is the Best PCB Layout software ? (Money no object)
    ... >> If this is the package I remember, you can make the thermal pad a small pad ... > Or could I use a polygon to open up an area in the solder mask? ... I can draw a rectangle on the tStop layer to ... there are still four more vias that are outside this pad area ...
    (comp.arch.embedded)