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July 1997

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From [log in to unmask] Mon Jul 21 16:
02:56 1997
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>From willli Fri Jul 18 11:
51:35 1997
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FAB: Re: Black oxide and wedge voiding
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Orna and Yehuda <[log in to unmask]>
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Hi,
I want to use the big discussion that went on last week about black oxide etc. , to ask you all about a little different thing.

The discussion was about black/brown/red oxide and reduced surfaces.
What do you think about oxide substituents like the "AlphaPrep" (an organo-metallic compound of Alpha-Metals) or simmilar ?
Especially on FR-4 and polyimide innerlayers .

Could they lessen the problems long associated with the oxide treatment - such as wedge voiding and pink ring ? What problems do they have ?


    ************************************* 
    *          Yehuda E. Weisz              
    *  e-mail: [log in to unmask]
    *  Tel: 972-3-5240362                    
    ************************************

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