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June 2008

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Subject:
Re: Solithane coating dewetting
From:
Graham Naisbitt <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Graham Naisbitt <[log in to unmask]>
Date:
Thu, 26 Jun 2008 12:05:11 +0100
Content-Type:
text/plain
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text/plain (50 lines) 
Silicone not sticking to silicone - no surprise.

How to remove silicone? Not easy, maybe plasma etching or a really  
aggressive solvent.

You need to get back to the component manufacturer and have them  
change their mold release or at least control how much they use.

Graham Naisbitt

On 26 Jun 2008, at 07:33, Tan Geok Ang wrote:

> Hi All,
> 	Quite often, I encountered Solithane coating dewetting issue
> over some IC moulding (rough or smooth, did not trace what moulding
> material is used) compounds across different suppliers, though the  
> whole
> PCBAs are being cleaned with EnSolv. What is the cause of the issue?  
> Is
> the cause due to the release agent used during the moulding compound
> process (but why cannot be clean away)?
> 	Thank in advance!
> Regards
> GA Tan
>
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