You just heat one side up until the solder melts, then heat the other side but leave the heat on for an extra half second then heat the other pad and push of the part with the iron. The important thing is to have a clean iron tip and to get as much of the iron on the pad as possible so that you get good heat transfer. Until you get skilled at it you may have to move the iron from pad to pad a few extra times. if you have problems just add some extra solder to one side as it'll help to contain the heat longer. it's also easier with 60/40 rather that 63/37 solder. You won't rip contacts as long as both sides are still liquid. just don't force it. done right the part will slide right off.
For the sot-23 you can remove the solder form the single pin and then heat and lift the part just enough so that that pin is no longer connected. it's then easy to remove the other two pins.
Paul Davis
On Wed, 12 May 2004 22:01:46 +0200, Stefan Trethan wrote:
> On Wed, 12 May 2004 13:29:59 -0600, Paul Davis <paul_davis@...>
> wrote:
>
>
>> If all you're changing is caps and resistors you can do it with a
>> plain soldering iron easily enough. You can remove sot-23 parts
>> too but it's a little trickier. Paul Davs
>>
>
> How do you do that? without ripping off the contacts?
>
>
> ST
>
>
> ------------------------ Yahoo! Groups Sponsor ---------------------
> ~--> Yahoo! Domains - Claim yours for only $14.70
> http://us.click.yahoo.com/Z1wmxD/DREIAA/yQLSAA/bGYolB/TM -----------
> ----------------------------------------------------------~->
>
> Be sure to visit the group home and check for new Bookmarks and
> files: http://groups.yahoo.com/group/Homebrew_PCBs Yahoo! Groups
> Links
>
>
>
>
>