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Date: | Tue, 15 Apr 2008 20:19:14 +0200 |
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Do you all really believe in ug/cm2 ? The limits are said to be arbitrarily
set. Uhhh..I'll get the whole academic world upset.
/Inge
-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Brian Ellis
Skickat: den 15 april 2008 17:35
Till: [log in to unmask]
Ämne: Re: [TN] Ionic Contamination Question
If you look through all the Technet archives, you may find an answer,
but the two answers you will certainly find on this subject are:
"It depends!"
"How long is a piece of string?"
I apologise if you think it unhelpful, but this is the best I can do.
Brian
Todd, Richard wrote:
> Technet,
>
> I am receiving questions about the allowable limits of ionic contamination
on our finished assemblies. I believe that J-STD-001D indicates that the
allowable limit is 1.5 ug/cm2. Is this the same for both leaded and
lead-free assemblies? Is there any other specification that details what
the maximum acceptable limits for ionic contamination should be for finished
assemblies?
>
> My customer won't take my word for it; I must provide industry-recognized
evidence.
>
> Thank you in advance.
>
> Regards,
>
> Rick Todd
> Senior Engineer
> Panasonic Automotive Systems
>
>
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