Here are my answers from a prior life:

1) What is the iron temperature range that you use to hand solder lead free wire solder (SAC305)?

I ran my solder tips at ~ 345C for SAC305 versus ~ 315C for SnPb.

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.

Not only the soldering iron should be set higher, there should be more emphasis on preheating the board. In a prior life, an operator had difficult soldering hardware with SAC305. I then instructed her to solder the hardware using a hot plate set at ~ 100C-125C. The operator successfully soldered the board with SAC305.

In addition, due to the higher tip temperatures, the operator will have to be more vigilant in keeping the solder tips clean.

Hope this helps.

Good Luck.

Lee Whiteman, PMP
Senior Member Engineering Staff
L-3 Communications East
Telephone: (856) 338-3508
FAX: (856) 338-2906
E-Mail: [log in to unmask]
 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dominic Boudreau
Sent: Wednesday, May 05, 2010 2:30 PM
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/> 

 
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