Alternately touching both pads of resistors and caps (I've only tried 1206's 
and 0805's this way) works, but I've never tried to re-use these.  For 28 
SSOPs, I worry about lifting pads (as I've done a few times) when heating it 
a lot to desolder, so I destroy the chip to protect the pads.  Also, don't 
want to trust a previously-soldered and unsoldered chip.  So I use an 
ultra-fine-tipped pair of tweezers and heat one pin at a time while lifting 
(bending backwards) the pin.  Then the same for all but one pin on that row.  
Then the other side.  The final two diagonal pins are easy to desolder and 
remove after that.  I just replace the part though.

Cheers,
-Neil.



On Sunday 27 August 2006 07:11, Dave King wrote:
> Just wondering about how much success anyone has had desoldering SMT parts
> for reuse. Actually wondering which of the various methods work or don't.
>
> I'm trying to get a air rework station but for now I have my normal
> soldering
> station and a spool of wick. I've had one person suggest to forget the
> wick and just alternate the iron tip from side to side on say a resistor
> until
> it comes loose. And supposedly this works fine until trying to do flat
> packs and larger chips.
>
> Just curious
>
> Dave
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