Re: Hand Soldering
- From: "Jon Slaughter" <Jon_Slaughter@xxxxxxxxxxx>
- Date: Sun, 28 Oct 2007 14:45:28 -0600
<jsc59@xxxxxxxxxxx> wrote in message
news:1193593299.552223.122560@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I'm a EE student at Cornell working on a research project. We have to
do a significant amount of hand soldering for the project. Which chip
packages are hand solderable? I need to know what I can purchase
from, say, DigiKey and actually solder. Examples of packages I'm
interested in are:
* DIP
* SIP
* SOT
* SOIC
* SSOP
* TSSOP
* QFN
* TDFN
I know it depends on equipment and skill. I've done some soldering
before, but not much. We have medium quality soldering irons (not
tiny tips) and basic magnification (no microscopes).
Thanks,
-J
(This is only needed for small pitch)
You can do all of them. The easiest way I've found(although I'm by far an
expert at it) is to pre-solder the pads and remove as much solder from the
pads as possible(use wick). Then just put the IC on the pads and heat the
leads(use flux). It sticks pretty well and I have yet to have any pins not
make good contact. I suppose its not the best method but seems to work well.
Trying to solder the pins after the fact is a mess IMO and takes about 10x
longer for very low pitch.
I imagine you could also use hot air or some other method but this, IMO,
seems the easiest if you don't have something better. You can check for
mechanical connection by using a continuity tester. If any pins don't stick
then you can always add a little solder to the tip and reheat the pin.
You would be supprised what you can solder. When I first tried SMT I was
nervious but its actually not all that difficult once you get the hang of
it.
.
- References:
- Hand Soldering
- From: jsc59
- Hand Soldering
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