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May 2010

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Subject:
From:
Werner Engelmaier <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Werner Engelmaier <[log in to unmask]>
Date:
Fri, 14 May 2010 11:00:52 -0400
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 Hi Ioan,
If that results in less stand-off, it is a negative for reliability.
Werner

 


 

 

-----Original Message-----
From: Ioan Tempea <[log in to unmask]>
To: [log in to unmask]
Sent: Fri, May 14, 2010 10:26 am
Subject: Re: [TN] LPP footprint


Chris,

Longer pads help visual inspection and allow for touch-ups, so they are good for 
assembly.

I don't know though how they impact reliability.

Regards,

Ioan Tempea, ing.
Ingénieur Principal de Fabrication / Senior Manufacturing Engineer
T | 450.967.7100 ext.244
E | [log in to unmask] 
W | www.digico.cc

N'imprimer que si nécessaire - Print only if you must

-----Message d'origine-----
De : Chris BALL [mailto:[log in to unmask]] 
Envoyé : May-14-10 10:20 AM
À : [log in to unmask]
Objet : [TN] LPP footprint

Hello Gurus,

This isn't a Friday quiz but feel free to help yourself to Doug's stuff
anyway.

I've seen that for a newer LPP footprint recommendation from National, the
pads extend a bit beyond the part. In the past they were typically the same
size as the contact areas of the component.

I'm guessing the change is to aid with AOI. Anyone care to confirm or
refute?

Happy Friday,
-Chris

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