Hi All!

Most of the time when I post, I've got some sort of problem. Well, today is
different.
Not only is it Monday, but I actually had a success today with something that
I had originally thought was going to be a problem.

One of the Project Engineers came to me last week and asked me for a
favor...I usually run away, but I went ahead and asked; "What kind of favor?"
"Oh just help me figure out how to solder a part to an adapter..." I said;
"you don't need me for that. He said; "Oh yes I do..."

He then hands me a 256-ball, PowerPC BGA, and then this little 1" square BGA
to PGA adapter and asks; "Can you solder the BGA to the adapter for me?" You
can see the adapter and BGA at http://www.stevezeva.homestead.com and look at
"Socket & Power PC and Socket & Power PC2"

I said; "Just how in the heck am I going to do that?" He said; "That's why I
came to you, you always figure something out."

To make a long story short, I did. I want to preface what I have to say by
stating that I have no interest in Circuit Technology Center, nor have I been
asked to post anything on the Technet about this. But their Flextac stencils
really work! This was my first time using them. I could have possibly gotten a
stainless steel stencil made, but then I would have had to figure out some way
to fixture everything to be able to print paste on the socket, but with these
flextac stencils with the contact adhesive (kinda like post-it notes adhesive)
this was really simple.

I posted pictures of the whole thing on my page. There's a picture with the
stencil mounted on the socket, followed by a picture of the actual paste print
(picture is a little fuzzy), followed by the BGA placement (I did that with my
rework machine. I have a PDR Lightmaster Pro), and finally followed by reflow
with the focused Infrared light. Lastly, there's a picture of the finished
piece...

Just like to post about the good things that go right once inna' while...

-Steve Gregory-

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