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May 2010

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Subject:
From:
Rex Waygood <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Rex Waygood <[log in to unmask]>
Date:
Thu, 27 May 2010 15:05:56 +0100
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Sensible hygiene should be adequate.
I would consider each item at a time and decide to share or not.
It would depend upon the cost of the items and the difficulty in cleaning, i.e. we don't share tools between waves, they are cheap but hard to clean. 
We have swapped wave pallets where the product has switched but ensured they were clean, wave pallets are expensive but easy to clean and the bath capacity would mean a large amount of solder would be required to produce a measureable cross contamination.
Stencils we have moved across but not many, tools at print are shared but easy to clean.
You are not looking for zero lead, you are looking to comply. Note lead free solders are not lead free so your margin is reduced.
OK?
Rex


Rex Waygood
Technical Manager
 
Hansatech EMS provides value manufacturing through engineering and quality
 
Hansatech EMS Limited
Benson Road
Nuffield Industrial Estate
Poole
Dorset
BH17 0RY
 
+44 (0)1202 338200


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: 27 May 2010 14:39
To: [log in to unmask]
Subject: [TN] Cross contamination of RoHS boards

Dear Technos,

 

Did anyone perform contamination testing of RoHS boards? I mean, we would like to have hard evidence telling where to draw the line: can we re-use SnPb stencils for RoHS, can we use the same cutters, picks , crimpers, lead forming dies, press-fit tooling, wave pallets, etc? I know the "better safe than sorry" policy is the best, but at times scrapping all the tooling sets for a product becomes very expensive!

 

Are there any reports, even pay ones, dealing with this topic?

 

Thanks,

 

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

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

 


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