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November 2018

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Subject:
From:
Steven Kelly <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Steven Kelly <[log in to unmask]>
Date:
Thu, 8 Nov 2018 19:02:28 +0000
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From: Steven Kelly
Sent: November-08-18 9:47 AM
To: TechNet E-Mail Forum <[log in to unmask]>
Subject: Immersion gold thickness per 4552

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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