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


--------------------------------------------------
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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