At 11:03 25/03/98 -0500, you wrote:
>In my experience the following adv./disadv. apply to carbon and gold
>contacts.
>

>Gold
>Advantage               - Less process steps ( lower cost? ) if flash plate
all over.
>                        - Smaller footprint for tight designs.

>Keith Lumley
>RexCan Circuits Inc.


Hi !
This statement is grate mistake !!!
 " Flash it over " it means , plating Nickel-Gold on unteched copper  while
Nickel-Gold is used further etch resist for copper . This is time consuming
operation , problematic yields , poor resolution , very problematic  for
fine lines and dense SMD . There are some ways to plate on etched boards ,
but this the board must be re-design .


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

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