Re: Desoldering: Thin layer of solder left on pads



On 2005-11-28, longjohnstuartmill@xxxxxxxxxxx <longjohnstuartmill@xxxxxxxxxxx> wrote:
> Hi,
>
> I'm not sure if this is a problem or not. When I desolder resistors
> from a PCB, the desoldering wick sucks up enough solder to remove the
> resistors, but leaves a thin layer of solder on the copper pads that is
> _extremely_ difficult to remove. Is this a normal desoldering
> experience? Do I have to remove all of the solder before inserting a
> new component,

no, only enough to get the new component in, if you're experimenting with
different components you can often temporarily mount them on the underside,
which can be easier, but through-hole mounting is mechanically stronger
and therfore reccomended for permanent replacements.

Bye.
Jasen
.



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