I've only used silver-content solder in the past to help with soldering=20
to difficult/non-common metals.  I'm pretty sure there are de-oxidizer=20
chemicals available, but for this you can probably just run some wire=20
wool over the pads to clean them up first, then solder with regular=20
tin/lead.

Cheers,
-Neil.




On 1/27/2017 4:22 AM, Electron wrote:
> Hello,
> the application is soldering SMD and TH components on PCB's, but in parti=
cular
> soldering components on not so "fresh" PCB's, thus with some oxide on the=
 pads.
>
> Is it correct to think that the Sn62/Pb36/Ag2 solder type would be the "e=
asiest",
> due to its low melting point?
>
> What about the flux type, which I think is even more important? I use ERS=
IN 362.
>
> I haven't "updated" myself on these subjects for decades, when due to RoH=
S
> directive the use of Pb was restriced, I know that soldering became a hel=
l, but
> have now, in all these years, valid alternatives been invented?
>
> Or, given that I solder stuff for myself which must be very realiable tho=
ugh
> (resist vibrations and temperature variations), should I stick with Sn62/=
Pb36/Ag2
> and ERSIN 362 flux for my own menthal sanity? I'm not going to ever dispo=
se these
> circuits in the environment anyway.
>
> With kind regards,
> Mario
>

--=20
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