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| Date: | Thu, 22 Apr 2010 08:40:12 -0400 |
| Content-Type: | text/plain |
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It looks like Elvis!
Inge, what do you have going on there?
Leland
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Tan Geok Ang
Sent: Thursday, April 22, 2010 8:34 AM
To: [log in to unmask]
Subject: Re: [TN] BGA balls dipped in sugar?
There is a face near to the right bottom side of
http://stevezeva.homestead.com/files/BGA_SEM.jpg
<https://webmail.dso.org.sg/exchweb/bin/redir.asp?URL=http://stevezeva.h
omestead.com/files/BGA_SEM.jpg>
________________________________
From: TechNet on behalf of Steve Gregory
Sent: Thu 4/22/2010 5:29 AM
To: [log in to unmask]
Subject: Re: [TN] BGA balls dipped in sugar?
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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