Joel,

I have been using 1:1 aps for our LF for some time with no problems.
We are printing 15mil & 20mil pitch with excellent solder wetting to pads
and leads.




Tom Braswell
Manufacturing Engineer
Fawn Electronics
6441 East NC 97
Elm City, NC 27822
Ph: (252) 977-8745
Fx: (252) 977-3477
Email: [log in to unmask]

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-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Joel Mearig
Sent: Thursday, December 15, 2005 6:42 PM
To: [log in to unmask]
Subject: [TN] Stencil Design for Lead-Free


I am looking for information regarding stencil design for fine-pitch
lead-free applications. I am interested to see what most people are doing
for the aperture size. Are you reducing or going 1 to 1? If you are reducing
what is the reduction formula? Are you reducing the same regardless of
aperture stance to print direction? Any input would be much appreciated.



Joel Mearig

Delta Tau Data Systems, Inc.




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