Subject:
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Re: Pad/Hole Widths
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 18 May 1998 09:38:27 GMT
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Original-From:
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Mike Davis <ipscone@halcyon.%NoSpam%com>
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Viewed:
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2200 times
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Thanks,
I was going to use a pad/hole size of .050/.028. The default size of
my library uses .050/.025.
I checked some pin size data and it shows .015 (min) to .023 (max).
Allowing .008 to .010 extra and .003 for plating, it seems that the
best size might be something more like .065 for the pad and .034-.036
for the hole size.
Vias are a little less important. I was going to use .040/.020 but
that seems a little large.
I checked the gerber files for then handyboard and they have only two
hole sizes, in this range. One is .028 and the other is .035. I
would assume the via hole is .028 and the pin hole is .035 (what I
calculated). I guess the via size is not so large after all.
Thanks
> Date: Mon, 18 May 1998 09:29:24 +0200
> From: Thomas Hauri <har@twi.ch>
> Organization: Technikum Winterthur Ingenieurschule
> To: Mike Davis <ipscone@halcyon.com>
> Cc: handyboard@media.mit.edu
> Subject: Re: Pad/Hole Widths
> Hi Mike
>
> check with your board manufacturer for production specification.
>
> The via hole size I resently used was 12mil with a via size of 16mil.
>
> For Pad/Hole Width use the specifications of the parts you want to put
> on your board.
> A hole should be 8-10mil wider than the pin you want to put in.
>
> Tom
>
>
> > Does anyone know what typical Pad/Hole Widths are for thru-hole
> > parts? What about via/hole widths?
> >
> > Is there a web site for PCB geometry sizes that someone could point
> > me to?
> >
> > Thanks
> > --
> > -----------------------------------------------------------------
> > ipscone@halcyon.com Shoot-To-Win!
> >
> > Protect the 2nd Amendment! Your rights may be next!
> > -----------------------------------------------------------------
>
>
>
>
--
-----------------------------------------------------------------
ipscone@halcyon.com Shoot-To-Win!
Protect the 2nd Amendment! Your rights may be next!
-----------------------------------------------------------------
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Message is in Reply To:
 | | Re: Pad/Hole Widths
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| Hi Mike check with your board manufacturer for production specification. The via hole size I resently used was 12mil with a via size of 16mil. For Pad/Hole Width use the specifications of the parts you want to put on your board. A hole should be (...) (27 years ago, 18-May-98, to lugnet.robotics.handyboard)
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