Electron <electron2k4 <at> infinito.it> writes:
> can (for personal use) lead solder be used on RoHS chips without any conc=
ern?
> Or the best soldering is achieved by using RoHS (lead free) solders?

Yes, with new parts (never soldered), but not for bgas (mixing rohs and non=
 rohs
balls).

The problems appear when even small amounts of rohs solder mix with differe=
nt
type rohs solder and/or leaded. The problems consist in the solder turning =
into
murky clumpy metal paste which refuses to solder and may become impossible =
to
get off or handle in any way. The only fix I know is to melt a generous amo=
unt
of ultra low temperature solder into it and suck up the mess with solder pu=
mp
and wick until no trace of it is left.

-- Peter

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.