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

Here comes the amazing part:

According to the current European regulations, lead-free soldering is NOT allowed in medical appliances, and some other possibly life-threatening environments. Why? Because so far, it is not proven that led-free solder joints do have the same lifetime as leaded ones. 

Now that most European board assembly companies have adapted their machinery to handle lead-free soldering, it is hard to find manufacturers here that still can do leaded soldering - Arrrrghhhhh !!!

Besides this, lead-free soldering is not that bad at all but it is much more critical to use the right soldering temperature, and to maintain this temperature within a small window, even when larger solder joints draw away heat energy. I have bought a new soldering station (Ersa i-CON) with a very fast re-heating solder tip. With this soldering station, and some experimenting, I have found the right temperature setting for the lead-free solder I'm currently using but I'm pretty sure that I'll need to find another optimum temperature setting as soon as I switch to another brand of solder with a different composition.

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