You may want to contact Fidelity OMG , try Mike Walsh @ 9732424110 , we run
their mid Phos bath and Auger data shows phos levels in the 4+ levels for a
new bath rising to under 7% for 5 MTO's in the bulk and approx. 1% higher
at the Nickel/Gold interface.

Regards
Gerard O'Brien.
Photocircuits Corporation

-----Original Message-----
From:   Eltek Ltd. - Process Engineering [SMTP:[log in to unmask]]
Sent:   Wednesday, October 21, 1998 1:50 11:05
To:     [log in to unmask]
Subject:        [TN] Phosphour in Electroless Nickel

I sent this message last week . No one responded . Maybe this week ?
Hi
We are running in our plant Electroless nickel - Immersion Gold  ( ENIG )
finishing for PCB based on Atotech chemistry . Phosphour content is in
middle range ( average 9% ) .
One of our customers request low phosphour content -  less than 7% .
We ae trying to force the chemistry to plate Nickel with such content of
phosphour by rising the temperature , increasing volume load ( sq cm per
liter of working solution ) etc , but untill now we do not have stable
process parameters .
Any recommendation for Atotech chemistry or someone else chemistry to
achieve the goal of phoshpour content in nickel less than 7% ???
Regards


Edward Szpruch
Eltek Ltd - Israel
Tel  972 3 9395050
Fax 972 3 9309581
E-mail :  [log in to unmask]

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