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March 2000

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Subject:
Re: Ionic Contamnation
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 15 Mar 2000 19:02:56 +0200
Content-Type:
text/plain
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text/plain (66 lines) 
Bob

Will reply to you off-TechNet

Brian

Bob Dube wrote:

> This is one for the board fabricators.
>
> We are currently meeting an Ionic Cleanliness spec for 1 of our customers
> set at 0.5 ug/Sq Cm on the finished cards. We are acheiving this using an
> extra cleaning step. This is largely manual an fairly time consuming. We've
> experimented with using dishwashers and although this has helped with
> respect to labor intensity, it hasn't done much to improve cycle time.
>
> Anybody had any experience utilizing conveyorized equipment or putting
> improved cleaning in-line with existing processes (both HASL and Immersion
> White Tin)?
>
> Bob Dube
>
> ES&D
>
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