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Date: | Fri, 6 Nov 1998 11:05:29 -0800 |
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Dear Josh:
I would recommend contacting OXFORD V.U.E, INC. at 626-256-6557. They
have lots of good data regarding etching speed, undercut, and control
methods.
Regards,
Ted Stern
[log in to unmask] wrote:
>
> I'm new at cupric etching. What are the parameters for the average innerlayer
> etch line? What controls should I be monitoring, for example, normality,
> copper content, etc? What ranges will provide me the best process in terms of
> etch line quality (minimum copper foot with best possible line width
> uniformity and etch speed)? I know equipment has a lot to do with the
> results; we can't change equipment, so I'm looking to improve quality with
> chemistry.
>
> Thanks.
>
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