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Date: | Wed, 21 Apr 2010 17:29:37 -0400 |
Content-Type: | text/plain |
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Hi Inge!
You sent me this picture some time ago, along with one of your beautiful SEM
images and the EDAX chart of it, remember?
http://stevezeva.homestead.com/files/bga002.jpg
http://stevezeva.homestead.com/files/BGA_SEM.jpg
http://stevezeva.homestead.com/files/BGA_EDAX.jpg
Steve
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From: "Inge" <[log in to unmask]>
Sent: Wednesday, April 21, 2010 4:26 PM
To: <[log in to unmask]>
Subject: [TN] BGA balls dipped in sugar?
> Hi,
> at least it looks so. It's ordinary lead tin soldering process. Analysis
> gave that what looked like sugar crystals probably was Lead Carbonate.
> How is that created? If someone got same, what did you do then? You need
> extraordinary stuff to remove these crystals.
> Sent picture to Steve.
> /Inge
>
>
>
>
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