[sdiy] What the heck is this for?

[Joe Grisso]

Hiya,

     Those look like solder paste masks for SMT devices. You can use
those for single chip placement for doing SMT parts. You apply solder
paste to a small squeegee, place the mask over the pads on your PCB,
then squeegee the paste down. Once the paste is down, you place the
part on top of it and then heat up the solder with a hot air pencil.

Best,

-- 
Joe Grisso
Detachment 3 Engineering

On Wed, Oct 29, 2008 at 4:49 PM, Eric Brombaugh <ebrombaugh1 at cox.net> wrote:
> OK, dumb question:
>
> Perusing the DIY section on DealExtreme today and came across pages and
> pages of "IC soldering film" - like this:
>
> http://www.dealextreme.com/details.dx/sku.6700
>
> Googling turns up additional sites selling this stuff, but no explanations
> of why you need it, or how it works. To my eye it looks like random
> footprints of SMD solder paste masks all jammed together on one sheet, but
> that strikes me as singularly useless.
>
> Any ideas what this is? If it's what it seems then that suggests there's an
> enormous underground of mad SMD DIY folks out there busily modding their
> cellphones...
>
> Eric
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