I'm not trimming my reply because I am forwarding this to the
Homebrew_PCBs list.
Wow!
Nice videos. The hot air method looked pretty fast to me, and if
you angle the head so it is blowing straight down or even slightly
away from the chip I don't see how you are really heating it up any
more than the other methods.
I've only done the one pin at a time method myself.
They all look like they work very well. I'd worry about solder
bridges created by the continuous flow solder painting method.
Steve Greenfield
--- tedinoue <
ted@...> wrote:
> Sacrificed a couple cheap SMDs and a carrier board I made to
> practice
> my SMD soldering techniques. Tried, the Radio Shack hot air
> pencil,
> the continuous solder painting and the pin by pin techniques.
>
> I also found a useful website that has little videos of each
> technique. Thought others might like it as well:
> http://www.circuittechctr.com/guides/7-5-3.htm
> http://www.circuittechctr.com/guides/7-5-1.htm
> http://www.circuittechctr.com/guides/7-5-2.htm
>
> What are people's opinions on thermal damage using each of these
> methods?
>
> Based on my quick and amateurish test, I found that the painting
> method has the potential to be very fast, but if you have bridges
> and
> have to use a braid to wick away extra solder, you're back to a
> fairly long exposure.
>
> The hot air method with solder paste seems quite neat, though I'm
>
> wondering how good it is to heat the entire chip so much?
> Certainly
> can't be as bad as toaster-ovening it, but it seems that you're
> really heating it a lot. Is this ok?
>
> Any other thoughts on these methods?
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