:: Also, damnit because they're only SSOP
With a small amount of practice, it is not that hard to hand solder
SOIC or SSOP.
Tools - preferably a ' hoof ' bit - these have a little well on the
underside and a small reservoir of solder gets capillaried into it -
but an ordinary small /fine flat bit will work.
Some form of lighting and a magnifying glass - depends on your
eyesight, lighting with no shadows most important. Fine solder 0.6mm
or less.
The hobby way of doing this would be to make sure the pads on the PCB
are clean and swipe a then even layer of solder over one each of pins
on opposite of each other. In other words pad one and pad 14 if that
is top left and bottom right, carefully place chip on pads, make sure
the bit has plenty of solder on it, apply gentle pressure to top of
chip (making sure it doesn't move) then dab gently the iron onto one
of the pads prepared above, once done do the other pad. Then at
leisure solder the rest of the pads - might be an idea to alternate
the sides that you are soldering to let the joint cool down a bit.
If you are lucky and can find someone who can let you have some nice
jelly flux (hard to get these days Farnell still have some, NOT
plumbers jelly flux), squirt it over the pads (it uses a syringe) be
quite liberal, then if you've a hoof bit, ply it with solder and then
you can just drag the bit down the pins, the flux will help keep the
chip in place and cause the solder to only run onto the pin and pad.
As they say in the west country 'Job Done! '. You may also need narrow
desoldering braid, just to tidy up small solder whiskers - magnifying
glass/lamp/microscope of benefit here.
It wouldn't pass class 3 soldering work, but that won't be a problem
for you.
Colin
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cdb,
colin@... on 17/03/2009
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