Cathy

Ionic contamination as an absolute value is totally meaningless with
"no-clean" chemistry. The first half of your question is therefore
irrelevent. The second half can be achieved, depending on conditions,
but I question its relevence, also.

Brian

Cathy Killen wrote:
>
> Hi everyone,
> Can a no-clean process achieve ionic contamination <1.5ug cmsq according to
> IPC TM-650 2.3.25 and a surface resistance > 5 X 10 (power of 8) according
> to IPC TM-650.2.6.3.3?
> If you believe it can be achieved, how?
> How could you confirm it as an ongoing process control?
> Cathy Killen
> Training Instructor
> [log in to unmask] <mailto:[log in to unmask]>
> An Oasis of Training Excellence
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