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Re: Prototyping BGA's



I haven't tried it, but Stencils Unlimited (www.stencilsunlimited.com) has an
SMT prototyping process using toaster ovens as the heat source. They also supply
adhesive-backed BGA stencils and rework kits. Ask them whether the two can be
used together. If not, consider using a small hot plate as the heat source (see
www.techni-tool.com and www.barnsteadthermolyne.com).

73,

John
KD6OZH

----- Original Message -----
From: "Howard Long" <howard@howardlong.com>
To: <amsat-bb@amsat.org>
Sent: Monday, 10 January, 2005 10:11 UTC
Subject: [amsat-bb] Prototyping BGA's


> Folks
>
> I am working on an experimental satellite payload project that demands the
> use of at least one BGA package (1mm pitch, 252 pins). On the ground it's
> fine as I've located a source of BGA sockets, despite the sockets costing
> about five times as much as the chip!
>
> However in space a socket is not going to be any use.
>
> If anyone has had any experience of small scale prototyping BGA's onto PCBs
> without resorting to third party commercial operations, I'd be glad of any
> tips.
>
> I'm fine hand soldering the 0.4 and 0.5mm QFP's, but I'm not sure how to go
> about dealing with BGA packages.
>
> 73, Howard G6LVB
> ----
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----
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