A newbie question

Hello,
Maybe it is a newbie question but i try to learn and because i'm not very
fluent in english i want to know what this sentence mean.
"parts need to be reballed"
Thanks for the help

 

[Steven K. Knapp]

"Reballing" is required to re-use parts in BGA packages that were once
soldered onto a board. "Reballing" is a way to reclaim these BGA parts.

-- SKK

<ouadid@iquebec.com> wrote in message
news:xn12c.18959$qA2.1251023@news20.bellglobal.com...

Hello,
Maybe it is a newbie question but i try to learn and because i'm not very
fluent in english i want to know what this sentence mean.
"parts need to be reballed"
Thanks for the help

 

[Peter Alfke]

"Balls", as in Ball-Grid-Array describe the many small half-spheres of
solder on the bottom of modern BGA packages, from a few hundred to over a
thousand of them.
In board assembly, these balls are heated up and collapse onto the pc-board
"pad" and form a perfect solder joint.
When, for any reason, a package has been removed from the pc-board, the
balls are left behind or damaged or deformed, so the device package must be
refurbished with new balls, and that step in re-manufacturing is called
"re-balling".
Peter Alfke

From: ouadid@iquebec.com
Organization: Bell Sympatico
Newsgroups: comp.arch.fpga
Date: Fri, 5 Mar 2004 15:51:08 GMT
Subject: A newbie question

Hello,
Maybe it is a newbie question but i try to learn and because i'm not very
fluent in english i want to know what this sentence mean.
"parts need to be reballed"
Thanks for the help

 

Thanks a lot for the explanations, it's well understood now what
means reballing. I guess it must be a special process that you can't
do in your home...