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September 2010

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Subject:
How to measure thickness of ENIG plating inside the via barrel
From:
Fabien Guizelin <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Fabien Guizelin <[log in to unmask]>
Date:
Fri, 17 Sep 2010 07:14:09 +0000
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Hi 

IPC-4552 calls for XRF to measure ENIG plating thickness. But, this method can only be applied to surface pads.  How can we assess the quality of the plating in via barrel ?    (poor plating would compromise mechanical strength and resistance to corrosion)

Thanks for your insight

Fabien


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