dear ron,

the problem can be improper stripping of Tin-lead or the loading of
electroless nickel bath may be less . look into these areas.

radhakrishnan
indal electronics limited


At 01:02 PM 10/15/97 -0700, you wrote:
>PWB manufacturers:
>Has anyone seen the phenomonen of exposed copper SMT pads after
>immersion NiAu. To further complicate this issue, any pad (via or SMT)
>that is tied to this pad in a net also does not get plated. This condition
>does not occur on every panel within the rack. One panel will have it,
>while the adjacent panel does not.
>Are we looking at a static charge on the panel that keeps certain nets
>from plating?
>Any ideas on what's causing this would be appreciated.
>
>Thank you
>Ron Hayashi
>
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With Best Regards
Your's truly,
Anthony Balraj

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                                    INDAL ELECTRONICS LIMITED.
                                    12/A, Industrial Area,
                                Nanjangud - 571 301.
Email:[log in to unmask]        Karnataka, INDIA.
Ph:(+91-8221)26618,26619,26375,26584 Fax:(+91-8221)26641
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