Hi Mark,

Good replys so far, and per Rich's suggestion about parts over .200"
tall, our requirement is .200" from the edge of the component to the
test pad. We also have a different value if the testpads are at the end
of component pads (SMD, which we use .018" pad edge to pad edge); or if
the testpad is along the side of the surface mount component. This will
vary between test houses, but we use a value of 1/2 the surface mount
device pad + .018" = pad edge/pad edge distance. We also tend to keep
testpoints a min of .100" from any thru hole devices less than .200"
tall.

Best of luck.

Mitch

---------Included Message----------
>      Date: Wed, 3 May 2000 09:55:58 -0700
>      From: "AMC-CAL-DVP Richard Hatano" <[log in to unmask]>
>      Reply-To: "DesignerCouncil E-Mail Forum."
<[log in to unmask]>, "AMC-CAL-DVP Richard Hatano"
<[log in to unmask]>
>      To: <[log in to unmask]>
>      Subject: Re: [DC] Test point size
>
>      I've been using .035" dia test points, and this is fine with the
3-4 test
>      houses I've encountered.  This is for boards that go about
20k/yr.  They
>      also want .100" center-to-center spacing min, a .125" clearance
from board
>      edge, and another clearance that I don't remember at this time
from taller
>      components.
>      Richard
>
>      > -----Original Message-----
>      > From: Mark Mainland [SMTP:[log in to unmask]]
>      > Sent: Wednesday, May 03, 2000 7:00 AM
>      > To:   [log in to unmask]
>      > Subject:      [DC] Test point size
>      >
>      > I'm trying to find out if anybody out there has been using test
points
>      > smaller than .040" in dia. with good results?
>      >
>      > Thanks
>      >
>      > Mark Mainland
>      > PCB Designer
>      > Cherry Electrical Products
>      > 11200 - 88th Ave.
>      > PO Box 581913
>      > Pleasant Prairie, WI 53158
>      > Ph. 262.942.6659
>      > Page. 888.819.0198
>      > Fx. 262-942-6334
>
---------End of Included Message----------
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