It depends...sorry Dough....but I can't find a better way to show how little 
I know.

From a long life among longlife tips I long for a long life without longlife 
tips.  Have seen even experienced operators do some bad things.  So, if you 
turn the digital knob on your supersoldering iron on 350 Centigrades , 
remember that some tiny little creeps will feel bad.  When at best, the 
component manufacturer has a written instruction that tell you not to exceed 
so and so many seconds with that hot tip, but what do you do when things 
don't wet as you want. You try again, and perhaps again. And thermal shocks 
will , not kill, but degrade the component. Therefore, we have supplied the 
operators with instructions on the computer screen, to shift to a tip with 
little mass, for instance, so that the tip lowers the temperature rapidly, 
quite opposite to normal operation. In some other cases, we lower the tip 
temp to some 250 C but with a tip with more copper.  No specials, all models 
available from most iron makers. One really good hand soldering operator  is 
worth more than two engineers.

Inge

--------------------------------------------------
From: "Dominic Boudreau" <[log in to unmask]>
Sent: den 5 May 2010 20:29
To: <[log in to unmask]>
Subject: [TN] Lead free hand soldering

> Hello Technetters, I have two questions for you regarding lead-free hand 
> soldering :
>
>
>
> 1)      What is the iron temperature range that you use to hand solder 
> lead free wire solder (SAC305)?
>
>
>
> 2)      Do the iron temperature should be set higher for a lead free wire 
> solder? Some people say that the iron temperature should be the same for 
> lead and lead-free wire solder and some say that the temperature should be 
> 50 °F higher for lead-free.
>
>
>
> I know that the iron temperature depends on many factors, but I just would 
> like to have a general idea.
>
>
>
> Any comments would be much appreciated.
>
>
>
>
>
>
>
> Dominic Boudreau, ing.
> Ingénieur de produit / Manufacturing Engineer
> E | [log in to unmask] <mailto:[log in to unmask]>
> W | www.digico.cc <http://www.digico.cc/>
>
>
> N'imprimer que si nécessaire - Print only if you must
>
>
>
>
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