Hi, Jim,

I haven't heard of a specific directive banning the use of no-clean, but
having worked all my life in the aerospace manufacturing industry, I
wouldn't naturally us no-cleans to start with.

As has been said before in this forum - no-clean does not mean no-residue.
In the operating environments that expensive aircraft frequent, ANY
residues affect the life and reliability of a board and not predictably so.
Their effect in an aerospace environment is many times more significant
than they are in, say, a PC or VCR, which operate only in relatively very
benign conditions.

If your company is not a specialist CM for aerospace boards - i.e. you're
more commercially oriented - then the directive is possibly issued
specially so that you're not tempted to use no-clean processes.

Peter




                    Jim Jenkins
                    <jjenki09@HAR        To:     [log in to unmask]
                    RIS.COM>             cc:     (bcc: DUNCAN Peter/Asst Prin Engr/ST
                    Sent by:             Aero/ST Group)
                    TechNet              Subject:     [TN] No No-clean?
                    <[log in to unmask]
                    ORG>


                    02/26/02
                    11:53 PM
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                    Jim Jenkins






Hi everybody,

I was just approached by one of our engineers whose customer told her that
the Air Force has issued a directive disallowing the use of no-clean fluxes
on any of their hardware.  The customer is flowing down that requirement to
us.  Do any of you know of this directive or what they could be referring
to?

Thanks,

Jim

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