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November 2018

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Subject:
Re: Immersion gold thickness per 4552
From:
Ed Hare <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Ed Hare <[log in to unmask]>
Date:
Thu, 8 Nov 2018 11:03:00 -0800
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Steven,

I believe it means that at higher gold thicknesses there is a higher probability of hyper-etching of the EN by the gold bath.

------------------------
Ed Hare
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> On Nov 8, 2018, at 7:03 AM, Steven Kelly <[log in to unmask]> wrote:
> 
> Hi all,
> Is it normal to obtain thickness readings of approx. 2.5 microinches of gold on large pads and 5 microinches on small pads across a panel ? What does it mean under paragraph 3.2.2 that higher gold thickness (>4.925 microinches) may compromise the integrity of the nickel undercoat?
> Thanks in advance. Steve Kelly

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