> Hi All,
>
> I would like to know what is the limit level for board cleanliness, if
> using  Ionograph.
> I remember the limit level for using Omegameter is 14, but can't remember
> what unit.
>
> Please enlighten me.
>
> Thanks.
>
> Poh
>

Lee has given you the correct old Mil figures BUT....

You would be well advised to use a go/no go figure of :
less than 0.5 microgrammes of sodium chloride equivalence per square
centimeter

Do not assume that this is then a "clean" assembly.

To get more info on this and spare some of us the heartache of repeating
ourselves - then please do a search on ionic cleanliness testing through the
TechNet archives.

--
Regards Graham Naisbitt

[log in to unmask]

Concoat Limited - Engineering Reliability in Electronics

Web: www.concoat.co.uk  and  www.concoatsystems.com

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