In SX Microcontrollers, SX/B Compiler and SX-Key Tool, SteveW wrote:

For what it's worth, I regularly hand-solder RoHS parts from various manufacturers, using tin-lead solder, without obvious problems. That's not to say that, 20 years down the line, there won't be some bizarre embrittlement that means that the components all fall off the boards, of course, but, so far, so good. I'm not alone in this, either. 
What _does_ go wrong, is soldering old components using RoHS temperatures. It can really wreck some surface mount parts - inductors and tiny SC70 packaged transistors / ICs seem to be the worst. You also only get one go, on 0603 and 0402 passives, before they give up and the terminations fall off. This can't possibly bode well for reliability - just say no!
(And RoHS solder is, in general, more annoying, less flowy, less wetty than 'proper' solder, for hand built stuff. If you're pushing your luck already (0402 passives, 0.5mm pin pitch ICs), RoHS solder doesn't help - use lots of flux, and hope for the best)

Steve

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