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September 2002

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Subject:
From:
"Lim, Chee How" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 27 Sep 2002 16:08:04 -0400
Content-Type:
text/plain
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text/plain (111 lines)
Hi Graham,

Please privide me a copy... Thank's

Regards,

> -----Original Message-----
> From: Graham Naisbitt [SMTP:[log in to unmask]]
> Sent: Friday, September 27, 2002 11:54 AM
> To:   [log in to unmask]
> Subject:      Re: [TN] Ionograph measurements
>
> > Hi Technet,
> >
> > One of our customers is complaining that the upper limit for our
> > ionograph test is set at 3.1 micrograms/cm2 instead of the 1.56
> > micrograms/cm2 that the IPC/EIA J-STD-001C prescribes is section 8.3.6.
> >
> > I know there exists a document  (probably an IPC or MIL-spec)
> > explaining how the 1.56 limit should be corrected for the exact type of
> > machine. For the Alpha Ionograph 500M the conversion factor is 2,
> > resulting in the 3.1 micrograms/cm2 limit.
> > However I can't remember where exactly this information can be found,
> > and I don't even know if it's still valid. Does anyone has a clue for me
> > ?
> >
> > Daan Terstegge
> > Unclassified mail
> > Personal Website: http://www.smtinfo.net
> >
> >
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> --------------------------------------------------------------------------
> ----
> > ---
> >
> Daan
>
> I have a copy that I shall dig out for you. If anyone else needs a copy
> let
> me know
>
> --
> Regards, Graham Naisbitt
> [log in to unmask]
> Mobile: +44 (0)79 6858 2121
>
> Concoat Limited - Engineering Electronics Reliability
>
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