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December 2001

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From:
"d. terstegge" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 14 Dec 2001 15:05:10 +0100
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Dear Technetters,

For our stencils I have recently introduced the homeplate design for the apertures of chipcomponents larger than 1206.
But now a problem occurs with the guys who have to order the stencils: it takes a lot of time, by using Gerber data, partslist and assembly drawing to figure out which components are 1206, 1210, 1812. For a coil or tantalumcaps with such a footprint I don't want a homeplate aperture because these parts need a little more solder.
So we end up with a nice specification, but very unpractical for the production engineers.

How do others deal with this ?  Mabe you have suggestions on how to make an easier-to-use specification ?  Or ideas about easier ways to order a stencil according to my spec ?
Should I keep it simple and say "use homeplate-apertures for all footprints larger than 1.5 * 1.5 mm ?"

Daan Terstegge
SMT Centre
Thales Communications
Unclassified mail
Personal Website: http://www.smtinfo.net

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