[SI-LIST] Re: remove non-functional pads
- From: "Chris McGrath" <chris.mcgrath@xxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Fri, 2 Apr 2004 06:58:21 -0800
Our board house uses Boardstation and it is my understanding that
turning unused pads off (removing them) is a configuration option. I'm
not sure if you can selectively do it, but I know that this is not
difficult to do if you want all pads removed.
-Chris
> -----Original Message-----
> From: lin-wl_wang@xxxxxxxxxxx [mailto:lin-wl_wang@xxxxxxxxxxx]=20
> Sent: Thursday, April 01, 2004 8:48 PM
> To: si-list@xxxxxxxxxxxxx
> Cc: lin-wl_wang@xxxxxxxxxxx
> Subject: [SI-LIST] remove non-functional pads
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>=20
> Hello,
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> I would like to know how to remove those non-functional pads=20
> in order to reduce via capacitance? Manually or automatically=20
> by layout software?
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> Currently I'm thinking of two methods.
> 1.In layout design, define via in the way that:
> (1) on all inner layers, pads defined as diameter=3D0 or 12,=20
> drilling hole=3D12mil(for example)
> (2) on an inner layer where trace is connected, pads defined=20
> as diameter=3D20mil, drilling hole=3D12mil
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> To what I understand, the unnecessary pads will be removed,=20
> and the pads used to route out the traces will remain. But=20
> there're many errors when generating the gerber due to this=20
> removal. Don't feel comfortable with the errors. We're now=20
> using PADS PowerPCB, do not know if the software has a=20
> function to remove these pads automatically. Hasn't got reply=20
> from vendor yet.
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> 2. or manually remove the pads in gerber file, but there're=20
> quite a lot.=20
> How do you think about the two method? Is there any better=20
> way to remove?
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> Thanks!
> -Wang Lin
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