The KEY to using solder wicking is FLUX. The flux will conduct the heat quickly
to melt the solder. Melt the solder with the iron applied to the wicking. If
there is too much solder, using the solder sucker to get the bulk of it and use
the wicking to get the rest. The component should come out freely if you have
desoldered properly. The "heat and yank" method is not desirable. You will
most likely damage whatever you are removing and possibly the board. Another
thing to watch out for is overheating the board. If you do, you can lift a
pad/trace. This is not hard to repair with the right tools, but it's much
easier to just avoid the problem by using lots of flux and keep the time the
iron is on the board to a minimum. The MOTM boards take a VERY long time to
damage. You have to do it on purpose - they are quality (unlike the so-called
Mil-Spec boards I work on)
If you have any more detailed questions, let me know.
Steve
David Bivins wrote:
>
> From: "David Bivins" <david@...>
>
> I have a hard time with my solder sucker and prefer to use braided solder
> wick for ICs. If you lay the wick across several pins at once and quickly
> place the iron tip flat against the board, you can take up a great deal of
> solder in very little time (which is key to not frying the IC!).
>
> Then again, I'm an amateur, but this has worked well for me on other
> projects and I haven't messed up an IC yet.
>
> David.
>
> > -----Original Message-----
> > From: Dave Bradley [mailto:daveb@...]
> > Sent: Friday, July 30, 1999 4:18 PM
> > To: motm@onelist.com
> > Subject: RE: [motm] --desoldering ic's?
> >
> >
> > From: "Dave Bradley" <daveb@...>
> >
> > At a minimum, you've got to have a manual solder sucker. It's a hand held
> > plunger-loaded doodad that creates a vacuum when you release the plunger,
> > sucking up solder that you have just reheated with your soldering gun. It
> > works OK for ICs without a large number of pins.
> >
> > If its a cheapie opamp, sometimes I just clip the pins on the top edge and
> > remove them individually. It's harder to fix a board that you have lifted
> > pads or traces on, than it is to replace an inexpensive IC.
> >
> > Dave Bradley
> > Principal Software Engineer
> > Engineering Animation, Inc.
> > daveb@...
> >
> > > -----Original Message-----
> > > From: hodad1@... [mailto:hodad1@...]
> > > Sent: Friday, July 30, 1999 3:34 PM
> > > To: motm@onelist.com
> > > Subject: Re: [motm] --desoldering ic's?
> > >
> > >
> > > From: hodad1@...
> > >
> > >
> > > It hasn't happened to me yet, but it probably will
> > eventually--if I solder
> > > an ic in backwards
> > > or blow one up, is there a recommended technique for getting
> > those little
> > > suckers out?
> > > --Short of a desoldering station, that is.
> > >
> > > tomr
> > >
> > >
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